Add empty java classes so downstream changes can happen.

Bug: 896775
Change-Id: Ib5535bcf945fb8377e9be9a98951298947d51b8c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1747152
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Sam Maier <smaier@chromium.org>
Commit-Queue: benjamin joyce <bjoyce@google.com>
Cr-Commit-Position: refs/heads/master@{#686127}

third_party/android_deps/BUILD.gn

@@ -5,6 +5,11 @@
 import("//build/config/android/rules.gni")
 
 # Library groups
+# TODO(bjoyce): Empty Java Groups. Remove after upstream review 1541944 lands.
+java_group("com_android_support_collections_java") {}
+java_group("com_android_support_drawerlayout_java") {}
+java_group("com_android_support_localbroadcastmanager_java") {}
+
 java_group("android_support_v4_java") {
   deps = [
     ":com_android_support_support_compat_java",