Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

content/gpu/gpu_watchdog_thread.h

 // 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.
 
 #ifndef CONTENT_GPU_GPU_WATCHDOG_THREAD_H_
 #define CONTENT_GPU_GPU_WATCHDOG_THREAD_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "base/threading/thread.h"
 #include "base/time.h"
 #include "content/common/gpu/gpu_watchdog.h"
 
+namespace content {
+
 // A thread that intermitently sends tasks to a group of watched message loops
 // and deliberately crashes if one of them does not respond after a timeout.
 class GpuWatchdogThread : public base::Thread,
                           public GpuWatchdog,
                           public base::RefCountedThreadSafe<GpuWatchdogThread> {
  public:
   explicit GpuWatchdogThread(int timeout);
 
   // Accessible on watched thread but only modified by watchdog thread.
   bool armed() const { return armed_; }
@@ skipping 44 matching lines @@
   base::TimeDelta arm_cpu_time_;
 #endif
 
   base::Time arm_absolute_time_;
 
   base::WeakPtrFactory<GpuWatchdogThread> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuWatchdogThread);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_GPU_GPU_WATCHDOG_THREAD_H_