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

chrome/browser/extensions/extension_web_ui_unittest.cc

 // Copyright 2014 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/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_web_ui.h"
 #include "chrome/browser/extensions/test_extension_system.h"
 #include "chrome/test/base/testing_profile.h"
@@ skipping 16 matching lines @@
  public:
   ExtensionWebUITest()
       : ui_thread_(content::BrowserThread::UI, &message_loop_) {}
 
  protected:
   void SetUp() override {
     profile_.reset(new TestingProfile());
     TestExtensionSystem* system =
         static_cast<TestExtensionSystem*>(ExtensionSystem::Get(profile_.get()));
     extension_service_ = system->CreateExtensionService(
-        CommandLine::ForCurrentProcess(), base::FilePath(), false);
+        base::CommandLine::ForCurrentProcess(), base::FilePath(), false);
   }
 
   void TearDown() override {
     profile_.reset();
     message_loop_.RunUntilIdle();
   }
 
   scoped_ptr<TestingProfile> profile_;
   ExtensionService* extension_service_;
   base::MessageLoop message_loop_;
@@ skipping 62 matching lines @@
   // This time the non-component extension was registered more recently and
   // should still take precedence.
   ExtensionWebUI::RegisterChromeURLOverrides(
       profile_.get(), URLOverrides::GetChromeURLOverrides(ext_unpacked.get()));
   url = GURL("chrome://bookmarks");
   EXPECT_TRUE(ExtensionWebUI::HandleChromeURLOverride(&url, profile_.get()));
   EXPECT_EQ(url, expected_unpacked_override_url);
 }
 
 }  // namespace extensions