Move a bunch of content\common code into the content namespace.

content/common/gpu/media/video_decode_accelerator_unittest.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.
 //
 // The bulk of this file is support code; sorry about that.  Here's an overview
 // to hopefully help readers of this code:
 // - RenderingHelper is charged with interacting with X11/{EGL/GLES2,GLX/GL} or
 //   Win/EGL.
 // - ClientState is an enum for the state of the decode client used by the test.
 // - ClientStateNotification is a barrier abstraction that allows the test code
@@ skipping 36 matching lines @@
 #include "content/common/gpu/media/mac_video_decode_accelerator.h"
 #elif defined(ARCH_CPU_X86_FAMILY)
 #include "content/common/gpu/media/vaapi_video_decode_accelerator.h"
 #elif defined(ARCH_CPU_ARMEL)
 #include "content/common/gpu/media/omx_video_decode_accelerator.h"
 #else
 #error The VideoAccelerator tests are not supported on this platform.
 #endif  // defined(OS_WIN)
 
 using media::VideoDecodeAccelerator;
-using video_test_util::RenderingHelper;
 
+namespace content {
 namespace {
 
 // Values optionally filled in from flags; see main() below.
 // The syntax of this variable is:
 //  filename:width:height:numframes:numfragments:minFPSwithRender:minFPSnoRender
 // where only the first field is required.  Value details:
 // - |filename| must be an h264 Annex B (NAL) stream or an IVF VP8 stream.
 // - |width| and |height| are in pixels.
 // - |numframes| is the number of picture frames in the file.
 // - |numfragments| NALU (h264) or frame (VP8) count in the stream.
@@ skipping 822 matching lines @@
 #if defined(OS_WIN)
   DXVAVideoDecodeAccelerator::PreSandboxInitialization();
 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL)
   OmxVideoDecodeAccelerator::PreSandboxInitialization();
 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
   VaapiVideoDecodeAccelerator::PreSandboxInitialization();
 #endif
 
   return RUN_ALL_TESTS();
 }
+
+}  // namespace content