Add OVERRIDE to content/.

content/common/appcache/appcache_backend_proxy.h

Index: content/common/appcache/appcache_backend_proxy.h
diff --git a/content/common/appcache/appcache_backend_proxy.h b/content/common/appcache/appcache_backend_proxy.h
index af09abfa36305b8e96f1f5c1cdc04418ac0910d1..050c07d71073779c48dee0581f5689cb27bfd9f1 100644
--- a/content/common/appcache/appcache_backend_proxy.h
+++ b/content/common/appcache/appcache_backend_proxy.h
@@ -18,28 +18,30 @@ class AppCacheBackendProxy : public appcache::AppCacheBackend {
   IPC::Message::Sender* sender() const { return sender_; }
 
   // AppCacheBackend methods
-  virtual void RegisterHost(int host_id);
-  virtual void UnregisterHost(int host_id);
-  virtual void SetSpawningHostId(int host_id, int spawning_host_id);
+  virtual void RegisterHost(int host_id) OVERRIDE;
+  virtual void UnregisterHost(int host_id) OVERRIDE;
+  virtual void SetSpawningHostId(int host_id, int spawning_host_id) OVERRIDE;
   virtual void SelectCache(int host_id,
                            const GURL& document_url,
                            const int64 cache_document_was_loaded_from,
-                           const GURL& manifest_url);
+                           const GURL& manifest_url) OVERRIDE;
   virtual void SelectCacheForWorker(
                            int host_id,
                            int parent_process_id,
-                           int parent_host_id);
+                           int parent_host_id) OVERRIDE;
   virtual void SelectCacheForSharedWorker(
                            int host_id,
-                           int64 appcache_id);
-  virtual void MarkAsForeignEntry(int host_id, const GURL& document_url,
-                                  int64 cache_document_was_loaded_from);
-  virtual appcache::Status GetStatus(int host_id);
-  virtual bool StartUpdate(int host_id);
-  virtual bool SwapCache(int host_id);
+                           int64 appcache_id) OVERRIDE;
+  virtual void MarkAsForeignEntry(
+      int host_id,
+      const GURL& document_url,
+      int64 cache_document_was_loaded_from) OVERRIDE;
+  virtual appcache::Status GetStatus(int host_id) OVERRIDE;
+  virtual bool StartUpdate(int host_id) OVERRIDE;
+  virtual bool SwapCache(int host_id) OVERRIDE;
   virtual void GetResourceList(
       int host_id,
-      std::vector<appcache::AppCacheResourceInfo>* resource_infos);
+      std::vector<appcache::AppCacheResourceInfo>* resource_infos) OVERRIDE;
 
  private:
   IPC::Message::Sender* sender_;