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

chrome/browser/chromeos/ui/idle_app_name_notification_view_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 "chrome/browser/chromeos/ui/idle_app_name_notification_view.h"
 
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/test_extension_system.h"
@@ skipping 14 matching lines @@
             Browser::TYPE_TABBED,
             chrome::HOST_DESKTOP_TYPE_ASH,
             false) {
   }
 
   virtual ~IdleAppNameNotificationViewTest() {
   }
 
   virtual void SetUp() override {
     // Add the application switch.
-    CommandLine::ForCurrentProcess()->AppendSwitchASCII(::switches::kAppId,
-                                                        kTestAppName);
+    base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
+        ::switches::kAppId, kTestAppName);
 
     BrowserWithTestWindowTest::SetUp();
 
     base::DictionaryValue manifest;
     manifest.SetString(extensions::manifest_keys::kName, "Test");
     manifest.SetString(extensions::manifest_keys::kVersion, "1");
     manifest.SetString(extensions::manifest_keys::kDescription, "Test app");
     manifest.SetString("author.email", "Someone");
 
     std::string error;
@@ skipping 76 matching lines @@
 // Check that an invalid app gets shown accordingly.
 TEST_F(IdleAppNameNotificationViewTest, CheckInvalidApp) {
   // Create a message which is visible for 10ms and fades in/out for 5ms.
   scoped_ptr<chromeos::IdleAppNameNotificationView> message(
       new chromeos::IdleAppNameNotificationView(10, 5, NULL));
   base::string16 text = message->GetShownTextForTest();
   base::string16 error = l10n_util::GetStringUTF16(
       IDS_IDLE_APP_NAME_UNKNOWN_APPLICATION_NOTIFICATION);
   EXPECT_EQ(error, text);
 }