Expose updater symbols in flutter_windows.dll

BUILD.gn

@@ -112,14 +112,10 @@ group("flutter") {
 
         # path_ops
         "//flutter/tools/path_ops",
-      ]
 
-      if (host_os == "linux") {
-        public_deps += [
-          # Built alongside gen_snapshot for 64 bit targets
-          "$dart_src/runtime/bin:analyze_snapshot",
-        ]
-      }
+        # Built alongside gen_snapshot arm64 targets.
+        "$dart_src/runtime/bin:analyze_snapshot",
+      ]
 
       if (full_dart_sdk) {
         public_deps += [ "//flutter/web_sdk" ]
@@ -193,6 +189,7 @@ group("unittests") {
       "//flutter/runtime:no_dart_plugin_registrant_unittests",
       "//flutter/runtime:runtime_unittests",
       "//flutter/shell/common:shell_unittests",
+      "//flutter/shell/common/shorebird:shorebird_unittests",
       "//flutter/shell/platform/embedder:embedder_a11y_unittests",
       "//flutter/shell/platform/embedder:embedder_proctable_unittests",
       "//flutter/shell/platform/embedder:embedder_unittests",
@@ -319,3 +316,19 @@ if (host_os == "win") {
     outputs = [ "$root_build_dir/gen_snapshot/gen_snapshot.exe" ]
   }
 }
+
+# A top-level target for analyze_snapshot, modeled after the gen_snapshot
+# target above.
+if (host_os == "win") {
+  _analyze_snapshot_target =
+      "$dart_src/runtime/bin:analyze_snapshot($host_toolchain)"
+
+  copy("analyze_snapshot") {
+    deps = [ _analyze_snapshot_target ]
+
+    analyze_snapshot_out_dir =
+        get_label_info(_analyze_snapshot_target, "root_out_dir")
+    sources = [ "$analyze_snapshot_out_dir/analyze_snapshot.exe" ]
+    outputs = [ "$root_build_dir/analyze_snapshot/analyze_snapshot.exe" ]
+  }
+}