Move a bunch of code in content\renderer to the content namespace.

content/renderer/mouse_lock_dispatcher.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/renderer/mouse_lock_dispatcher.h"
 
 #include "base/logging.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 
+namespace content {
+
 MouseLockDispatcher::MouseLockDispatcher() : mouse_locked_(false),
                                              pending_lock_request_(false),
                                              pending_unlock_request_(false),
                                              unlocked_by_target_(false),
                                              target_(NULL) {
 }
 
 MouseLockDispatcher::~MouseLockDispatcher() {
 }
 
@@ skipping 73 matching lines @@
 
   LockTarget* last_target = target_;
   target_ = NULL;
 
   // Callbacks made after all state modification to prevent reentrant errors
   // such as OnMouseLockLost() synchronously calling LockMouse().
 
   if (last_target)
     last_target->OnMouseLockLost();
 }
+
+}  // namespace content