Make callers of CommandLine use it via the base:: namespace.

content/shell/renderer/shell_content_renderer_client.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/shell/renderer/shell_content_renderer_client.h"
 
 #include "base/command_line.h"
 #include "components/web_cache/renderer/web_cache_render_process_observer.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/shell/renderer/shell_render_view_observer.h"
@@ skipping 14 matching lines @@
   web_cache_observer_.reset(new web_cache::WebCacheRenderProcessObserver());
   thread->AddObserver(web_cache_observer_.get());
 }
 
 void ShellContentRendererClient::RenderViewCreated(RenderView* render_view) {
   new ShellRenderViewObserver(render_view);
 }
 
 bool ShellContentRendererClient::IsPluginAllowedToUseCompositorAPI(
     const GURL& url) {
-  return CommandLine::ForCurrentProcess()->HasSwitch(
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnablePepperTesting);
 }
 
 bool ShellContentRendererClient::IsPluginAllowedToUseVideoDecodeAPI(
     const GURL& url) {
-  return CommandLine::ForCurrentProcess()->HasSwitch(
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnablePepperTesting);
 }
 
 bool ShellContentRendererClient::IsPluginAllowedToUseDevChannelAPIs() {
-  return CommandLine::ForCurrentProcess()->HasSwitch(
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnablePepperTesting);
 }
 
 }  // namespace content