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

content/renderer/render_view_browsertest_mac.mm

 // 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 "base/string_util.h"
 #include "base/string16.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/test/render_view_test.h"
 #include "content/renderer/render_view_impl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include <Cocoa/Cocoa.h>
 #include <Carbon/Carbon.h>  // for the kVK_* constants.
 
-using content::NativeWebKeyboardEvent;
-using content::RenderViewTest;
+namespace content {
 
 NSEvent* CmdDeadKeyEvent(NSEventType type, unsigned short code) {
   UniChar uniChar = 0;
   switch(code) {
     case kVK_UpArrow:
       uniChar = NSUpArrowFunctionKey;
       break;
     case kVK_DownArrow:
       uniChar = NSDownArrowFunctionKey;
       break;
@@ skipping 113 matching lines @@
   const char* kArrowUpNoScroll =
       "38,false,false,true,false\np1\n\np2";
   view->OnSetEditCommandsForNextKeyEvent(
       EditCommands(1, EditCommand("moveToBeginningOfDocument", "")));
   SendNativeKeyEvent(NativeWebKeyboardEvent(arrowUpKeyDown));
   ProcessPendingMessages();
   output = GetMainFrame()->contentAsText(kMaxOutputCharacters);
   EXPECT_EQ(kArrowUpNoScroll, UTF16ToASCII(output));
 }
 
+}  // namespace content