diff --git a/DEPS b/DEPS
index 66f28f0690dfb..7be2540dbe42c 100644
--- a/DEPS
+++ b/DEPS
@@ -3356,11 +3356,11 @@ deps = {
       'dep_type': 'cipd',
   },
 
-  'src/third_party/android_deps/libs/com_google_protobuf_protobuf_lite': {
+  'src/third_party/android_deps/libs/com_google_protobuf_protobuf_javalite': {
       'packages': [
           {
-              'package': 'chromium/third_party/android_deps/libs/com_google_protobuf_protobuf_lite',
-              'version': 'version:3.0.1-cr0',
+              'package': 'chromium/third_party/android_deps/libs/com_google_protobuf_protobuf_javalite',
+              'version': 'version:3.12.2-cr0',
           },
       ],
       'condition': 'checkout_android',
diff --git a/base/android/proguard/chromium_apk.flags b/base/android/proguard/chromium_apk.flags
index 472a6c297eb9c..5d3c67617880f 100644
--- a/base/android/proguard/chromium_apk.flags
+++ b/base/android/proguard/chromium_apk.flags
@@ -98,3 +98,8 @@
   public int getMinApkVersion();
   public boolean requiresSignIn();
 }
+
+# Protobuf java lite runtime uses reflection
+-keepclassmembers class * extends com.google.protobuf.GeneratedMessageLite {
+  <fields>;
+}
diff --git a/build/config/android/rules.gni b/build/config/android/rules.gni
index 7056703c377fc..cbd77fe0c4300 100644
--- a/build/config/android/rules.gni
+++ b/build/config/android/rules.gni
@@ -4053,7 +4053,6 @@ if (enable_java_templates) {
       # Use the regular proto library to generate lite protos.
       _protoc_bin = "//third_party/android_protoc/protoc"
       _proto_runtime = "//third_party/android_deps:com_google_protobuf_protobuf_javalite_java"
-      _protoc_javalite_plugin_dir = "//third_party/protoc_javalite/"
     }
     _proto_path = invoker.proto_path
     _template_name = target_name
@@ -4097,11 +4096,6 @@ if (enable_java_templates) {
 
       if (_generate_nano) {
         args += [ "--nano" ]
-      } else {
-        args += [
-          "--protoc-javalite-plugin-dir",
-          rebase_path(_protoc_javalite_plugin_dir, root_build_dir),
-        ]
       }
     }
 
diff --git a/build/protoc_java.py b/build/protoc_java.py
index 62b012e2861c2..25ea118af21ec 100755
--- a/build/protoc_java.py
+++ b/build/protoc_java.py
@@ -37,8 +37,6 @@ def main(argv):
   parser.add_option("--stamp", help="File to touch on success.")
   parser.add_option("--nano",
       help="Use to generate nano protos.", action='store_true')
-  parser.add_option("--protoc-javalite-plugin-dir",
-                    help="Path to protoc java lite plugin directory.")
   parser.add_option("--import-dir", action="append", default=[],
                     help="Extra import directory for protos, can be repeated.")
   options, args = parser.parse_args(argv)
@@ -59,21 +57,11 @@ def main(argv):
                         'store_unknown_fields=true']
       out_arg = '--javanano_out=' + ','.join(generator_args) + ':' + temp_dir
     else:
-      out_arg = '--javalite_out=' + temp_dir
-
-    custom_env = os.environ.copy()
-    if options.protoc_javalite_plugin_dir:
-      # If we are generating lite protos, then the lite plugin needs to be in
-      # the path when protoc is called. See
-      # https://github.com/protocolbuffers/protobuf/blob/master/java/lite.md
-      custom_env['PATH'] = '{}:{}'.format(
-          os.path.abspath(options.protoc_javalite_plugin_dir),
-          custom_env['PATH'])
+      out_arg = '--java_out=lite:' + temp_dir
 
     # Generate Java files using protoc.
     build_utils.CheckOutput(
         [options.protoc] + proto_path_args + [out_arg] + args,
-        env=custom_env,
         # protoc generates superfluous warnings about LITE_RUNTIME deprecation
         # even though we are using the new non-deprecated method.
         stderr_filter=lambda output: build_utils.FilterLines(
diff --git a/chrome/android/expectations/monochrome_public_bundle.proguard_flags.expected b/chrome/android/expectations/monochrome_public_bundle.proguard_flags.expected
index fa1ce3a01fe2a..57274b41bd42b 100644
--- a/chrome/android/expectations/monochrome_public_bundle.proguard_flags.expected
+++ b/chrome/android/expectations/monochrome_public_bundle.proguard_flags.expected
@@ -177,6 +177,11 @@
   public boolean requiresSignIn();
 }
 
+# Protobuf java lite runtime uses reflection
+-keepclassmembers class * extends com.google.protobuf.GeneratedMessageLite {
+  <fields>;
+}
+
 ################################################################################
 # ../../base/android/proguard/chromium_code.flags
 ################################################################################
diff --git a/chrome/android/feed/core/java/src/org/chromium/chrome/browser/feed/v2/FeedStreamSurface.java b/chrome/android/feed/core/java/src/org/chromium/chrome/browser/feed/v2/FeedStreamSurface.java
index 0377844070b05..cacfc4f60c04d 100644
--- a/chrome/android/feed/core/java/src/org/chromium/chrome/browser/feed/v2/FeedStreamSurface.java
+++ b/chrome/android/feed/core/java/src/org/chromium/chrome/browser/feed/v2/FeedStreamSurface.java
@@ -40,10 +40,8 @@
 import org.chromium.components.browser_ui.bottomsheet.BottomSheetController;
 import org.chromium.components.feed.proto.FeedUiProto.SharedState;
 import org.chromium.components.feed.proto.FeedUiProto.Slice;
-import org.chromium.components.feed.proto.FeedUiProto.Slice.SliceDataCase;
 import org.chromium.components.feed.proto.FeedUiProto.StreamUpdate;
 import org.chromium.components.feed.proto.FeedUiProto.StreamUpdate.SliceUpdate;
-import org.chromium.components.feed.proto.FeedUiProto.StreamUpdate.SliceUpdate.UpdateCase;
 import org.chromium.components.signin.base.CoreAccountInfo;
 import org.chromium.components.signin.identitymanager.ConsentLevel;
 import org.chromium.content_public.browser.LoadUrlParams;
@@ -314,7 +312,7 @@ void onStreamUpdated(byte[] data) {
             newContentList.add(mContentManager.getContent(i));
         }
         for (SliceUpdate sliceUpdate : streamUpdate.getUpdatedSlicesList()) {
-            if (sliceUpdate.getUpdateCase() == UpdateCase.SLICE) {
+            if (sliceUpdate.hasSlice()) {
                 newContentList.add(createContentFromSlice(sliceUpdate.getSlice()));
             } else {
                 String existingSliceId = sliceUpdate.getSliceId();
@@ -379,10 +377,10 @@ private void updateContentsInPlace(
 
     private FeedListContentManager.FeedContent createContentFromSlice(Slice slice) {
         String sliceId = slice.getSliceId();
-        if (slice.getSliceDataCase() == SliceDataCase.XSURFACE_SLICE) {
+        if (slice.hasXsurfaceSlice()) {
             return new FeedListContentManager.ExternalViewContent(
                     sliceId, slice.getXsurfaceSlice().getXsurfaceFrame().toByteArray());
-        } else if (slice.getSliceDataCase() == SliceDataCase.LOADING_SPINNER_SLICE) {
+        } else if (slice.hasLoadingSpinnerSlice()) {
             return new FeedListContentManager.NativeViewContent(sliceId, R.layout.feed_spinner);
         } else {
             // TODO(jianli): Create native view for ZeroStateSlice.
diff --git a/third_party/android_deps/BUILD.gn b/third_party/android_deps/BUILD.gn
index beb185023e112..895278aaab470 100644
--- a/third_party/android_deps/BUILD.gn
+++ b/third_party/android_deps/BUILD.gn
@@ -89,12 +89,6 @@ java_annotation_processor("dagger_processor") {
   deps = [ ":com_google_dagger_dagger_compiler_java" ]
 }
 
-# Alias new java lite runtime to old javalite runtime name until
-# crbug.com/1093059 is fixed and we go back to the latest runtime.
-java_group("com_google_protobuf_protobuf_javalite_java") {
-  deps = [ ":com_google_protobuf_protobuf_lite_cr1_java" ]
-}
-
 # The section below is generated by running
 # `//tools/android/roll/android_deps/fetch_all.py`
 
@@ -1404,9 +1398,10 @@ java_prebuilt("com_google_j2objc_j2objc_annotations_java") {
 }
 
 # This is generated, do not edit. Update BuildConfigGenerator.groovy instead.
-java_prebuilt("com_google_protobuf_protobuf_lite_cr1_java") {
-  jar_path = "libs/com_google_protobuf_protobuf_lite/protobuf-lite-3.0.1.jar"
-  output_name = "com_google_protobuf_protobuf_lite"
+java_prebuilt("com_google_protobuf_protobuf_javalite_java") {
+  jar_path =
+      "libs/com_google_protobuf_protobuf_javalite/protobuf-javalite-3.12.2.jar"
+  output_name = "com_google_protobuf_protobuf_javalite"
   supports_android = true
 }
 
diff --git a/third_party/android_deps/additional_readme_paths.json b/third_party/android_deps/additional_readme_paths.json
index 93b98cf14fae9..779878f53dc40 100644
--- a/third_party/android_deps/additional_readme_paths.json
+++ b/third_party/android_deps/additional_readme_paths.json
@@ -160,7 +160,7 @@
     "libs/com_google_guava_listenablefuture",
     "libs/com_google_j2objc_j2objc_annotations",
     "libs/com_google_protobuf_protobuf_java",
-    "libs/com_google_protobuf_protobuf_lite",
+    "libs/com_google_protobuf_protobuf_javalite",
     "libs/com_googlecode_java_diff_utils_diffutils",
     "libs/com_squareup_javapoet",
     "libs/com_squareup_javawriter",
diff --git a/third_party/android_deps/build.gradle b/third_party/android_deps/build.gradle
index 5355c71819695..ab1a73d8b8c01 100644
--- a/third_party/android_deps/build.gradle
+++ b/third_party/android_deps/build.gradle
@@ -123,7 +123,7 @@ dependencies {
     compile "com.google.guava:failureaccess:1.0.1"
     compile "com.google.guava:listenablefuture:1.0"
     compile "com.google.j2objc:j2objc-annotations:1.1"
-    compile "com.google.protobuf:protobuf-lite:3.0.1"
+    compile "com.google.protobuf:protobuf-javalite:3.12.2"
     compile "javax.annotation:javax.annotation-api:1.3.2"
     compile "javax.annotation:jsr250-api:1.0"
     compile "javax.inject:javax.inject:1"
diff --git a/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/LICENSE b/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/LICENSE
deleted file mode 100644
index 19b305b00060a..0000000000000
--- a/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/LICENSE
+++ /dev/null
@@ -1,32 +0,0 @@
-Copyright 2008 Google Inc.  All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-    * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-    * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-Code generated by the Protocol Buffer compiler is owned by the owner
-of the input file used when generating it.  This code is not
-standalone and requires a support library to be linked with it.  This
-support library is itself covered by the above license.
diff --git a/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/OWNERS b/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/OWNERS
deleted file mode 100644
index 7b571d97ee54f..0000000000000
--- a/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/OWNERS
+++ /dev/null
@@ -1 +0,0 @@
-file://third_party/android_deps/OWNERS
\ No newline at end of file
diff --git a/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/README.chromium b/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/README.chromium
deleted file mode 100644
index 11d48fb2c8cc8..0000000000000
--- a/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/README.chromium
+++ /dev/null
@@ -1,13 +0,0 @@
-Name: Protocol Buffers [Lite]
-Short Name: protobuf-lite
-URL: https://github.com/protocolbuffers/protobuf/blob/master/java/lite.md
-Version: 3.0.1
-License: BSD
-License File: LICENSE
-Security Critical: yes
-
-Description:
-A trimmed-down version of the Protocol Buffers library.
-
-Local Modifications:
-No modifications.
diff --git a/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/cipd.yaml b/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/cipd.yaml
deleted file mode 100644
index 6e75f658e2509..0000000000000
--- a/third_party/android_deps/libs/com_google_protobuf_protobuf_lite/cipd.yaml
+++ /dev/null
@@ -1,10 +0,0 @@
-# Copyright 2018 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# To create CIPD package run the following command.
-# cipd create --pkg-def cipd.yaml -tag version:3.0.1-cr0
-package: chromium/third_party/android_deps/libs/com_google_protobuf_protobuf_lite
-description: "Protocol Buffers [Lite]"
-data:
-- file: protobuf-lite-3.0.1.jar