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

chrome/browser/ui/app_list/search/webstore/webstore_provider_browsertest.cc

 // Copyright 2013 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 <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 90 matching lines @@
   ~WebstoreProviderTest() override {}
 
   // InProcessBrowserTest overrides:
   void SetUpOnMainThread() override {
     test_server_.reset(new EmbeddedTestServer);
 
     ASSERT_TRUE(test_server_->InitializeAndWaitUntilReady());
     test_server_->RegisterRequestHandler(
         base::Bind(&WebstoreProviderTest::HandleRequest,
                    base::Unretained(this)));
-    CommandLine::ForCurrentProcess()->AppendSwitchASCII(
+    base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
         ::switches::kAppsGalleryURL, test_server_->base_url().spec());
-    CommandLine::ForCurrentProcess()->AppendSwitch(
+    base::CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kEnableExperimentalAppList);
 
     webstore_provider_.reset(new WebstoreProvider(
         ProfileManager::GetActiveUserProfile(), NULL));
     webstore_provider_->set_webstore_search_fetched_callback(
         base::Bind(&WebstoreProviderTest::OnSearchResultsFetched,
                    base::Unretained(this)));
     // TODO(mukai): add test cases for throttling.
     webstore_provider_->set_use_throttling(false);
   }
@@ skipping 177 matching lines @@
 #endif
 IN_PROC_BROWSER_TEST_F(WebstoreProviderTest, MAYBE_SearchCache) {
   RunQueryAndVerify("foo", kOneResult, kParsedOneResult, 1);
 
   // No result is provided but the provider gets the result from the cache.
   RunQueryAndVerify("foo", "", kParsedOneResult, 1);
 }
 
 }  // namespace test
 }  // namespace app_list