Move more files into the content namespace.

content/browser/renderer_host/render_widget_host_view_mac_editcommand_helper.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.
 
 #import "content/browser/renderer_host/render_widget_host_view_mac_editcommand_helper.h"
 
 #import <objc/runtime.h>
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #import "content/browser/renderer_host/render_widget_host_view_mac.h"
 
-using content::RenderWidgetHostImpl;
+namespace content {
+namespace {
 
-namespace {
 // The names of all the objc selectors w/o ':'s added to an object by
 // AddEditingSelectorsToClass().
 //
 // This needs to be kept in Sync with WEB_COMMAND list in the WebKit tree at:
 // WebKit/mac/WebView/WebHTMLView.mm .
 const char* kEditCommands[] = {
   "alignCenter",
   "alignJustified",
   "alignLeft",
   "alignRight",
@@ skipping 204 matching lines @@
 NSArray* RenderWidgetHostViewMacEditCommandHelper::GetEditSelectorNames() {
   size_t num_edit_commands = arraysize(kEditCommands);
   NSMutableArray* ret = [NSMutableArray arrayWithCapacity:num_edit_commands];
 
   for (size_t i = 0; i < num_edit_commands; ++i) {
       [ret addObject:[NSString stringWithUTF8String:kEditCommands[i]]];
   }
 
   return ret;
 }
+
+}  // namespace content