Move sync/notifier to components/invalidation

sync/internal_api/public/base/invalidation.h

Index: sync/internal_api/public/base/invalidation.h
diff --git a/sync/internal_api/public/base/invalidation.h b/sync/internal_api/public/base/invalidation.h
index 309eb7de0147355fb481d350119dd86b508b90fb..7be82f8983abc0fcaa142a1a903c8c414ee5f766 100644
--- a/sync/internal_api/public/base/invalidation.h
+++ b/sync/internal_api/public/base/invalidation.h
@@ -35,9 +35,15 @@ class SYNC_EXPORT Invalidation {
   static scoped_ptr<Invalidation> InitFromValue(
       const base::DictionaryValue& value);
 
-  Invalidation(const Invalidation& other);
   ~Invalidation();
 
+  // We define the copy and assignment operators explicitly for now, even
+  // though the implicit definitions would be good enough for our purposes.
+  // This is to work around some linker issues in the Windows build.  See
+  // http://crbug.com/394549.
+  Invalidation(const Invalidation& other);
+  Invalidation& operator=(const Invalidation& other);
+
   // Compares two invalidations.  The comparison ignores ack-tracking state.
   bool Equals(const Invalidation& other) const;