Fix header guard and namespace in android_webview

android_webview/browser/child_frame.cc

 // Copyright 2015 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 "android_webview/browser/child_frame.h"
 
 #include <utility>
 
 #include "base/trace_event/trace_event.h"
 #include "cc/output/compositor_frame.h"
@@ skipping 29 matching lines @@
   TRACE_EVENT0("android_webview", "GetFrame");
   DCHECK(!frame);
   auto frame_ptr = frame_future->GetFrame();
   if (frame_ptr) {
     compositor_frame_sink_id = frame_ptr->compositor_frame_sink_id;
     frame = std::move(frame_ptr->frame);
   }
   frame_future = nullptr;
 }
 
-}  // namespace webview
+}  // namespace android_webview