Enable Clang warnings for implementation files on all platforms.

content/app/android/child_process_service.cc

 // Copyright (c) 2012 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.
 
 #include "content/app/android/child_process_service.h"
 
 #include <android/native_window_jni.h>
 #include <cpu-features.h>
 
 #include "base/android/jni_array.h"
@@ skipping 29 matching lines @@
   }
 
   virtual ~SurfaceTexturePeerChildImpl() {
     GpuSurfaceLookup::InitInstance(NULL);
   }
 
   virtual void EstablishSurfaceTexturePeer(
       base::ProcessHandle pid,
       scoped_refptr<gfx::SurfaceTextureBridge> surface_texture_bridge,
       int primary_id,
-      int secondary_id) {
+      int secondary_id) OVERRIDE {
     JNIEnv* env = base::android::AttachCurrentThread();
     content::Java_ChildProcessService_establishSurfaceTexturePeer(
         env, service_.obj(), pid,
         surface_texture_bridge->j_surface_texture().obj(), primary_id,
         secondary_id);
     CheckException(env);
   }
 
   virtual gfx::AcceleratedWidget AcquireNativeWidget(int surface_id) OVERRIDE {
     JNIEnv* env = base::android::AttachCurrentThread();
@@ skipping 81 matching lines @@
   ChildProcess* current_process = ChildProcess::current();
   if (!current_process)
     return;
   ChildThread* main_child_thread = current_process->main_thread();
   if (main_child_thread && main_child_thread->message_loop())
     main_child_thread->message_loop()->PostTask(FROM_HERE,
         base::Bind(&QuitMainThreadMessageLoop));
 }
 
 }  // namespace content