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

chrome/browser/chromeos/file_manager/file_tasks_unittest.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 "chrome/browser/chromeos/file_manager/file_tasks.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 387 matching lines @@
   FileHandlerInfo file_handler_info_8;
   file_handler_info_8.extensions.insert("*");
   file_handler_info_8.types.insert("image/*");
   EXPECT_TRUE(IsGenericFileHandler(file_handler_info_8));
 }
 
 // Test using the test extension system, which needs lots of setup.
 class FileManagerFileTasksComplexTest : public testing::Test {
  protected:
   FileManagerFileTasksComplexTest()
-      : command_line_(CommandLine::NO_PROGRAM),
-        extension_service_(NULL) {
+      : command_line_(base::CommandLine::NO_PROGRAM), extension_service_(NULL) {
     extensions::TestExtensionSystem* test_extension_system =
         static_cast<extensions::TestExtensionSystem*>(
             extensions::ExtensionSystem::Get(&test_profile_));
     extension_service_ = test_extension_system->CreateExtensionService(
         &command_line_,
         base::FilePath()  /* install_directory */,
         false  /* autoupdate_enabled*/);
   }
 
   content::TestBrowserThreadBundle thread_bundle_;
   chromeos::ScopedTestDeviceSettingsService test_device_settings_service_;
   chromeos::ScopedTestCrosSettings test_cros_settings_;
   chromeos::ScopedTestUserManager test_user_manager_;
   TestingProfile test_profile_;
-  CommandLine command_line_;
+  base::CommandLine command_line_;
   ExtensionService* extension_service_;  // Owned by test_profile_;
 };
 
 // The basic logic is similar to a test case for FindDriveAppTasks above.
 TEST_F(FileManagerFileTasksComplexTest, FindFileHandlerTasks) {
   // Random IDs generated by
   // % ruby -le 'print (0...32).to_a.map{(?a + rand(16)).chr}.join'
   const char kFooId[] = "hhgbjpmdppecanaaogonaigmmifgpaph";
   const char kBarId[] = "odlhccgofgkadkkhcmhgnhgahonahoca";
   const char kEphemeralId[] = "opoomfdlbjcbjinalcjdjfoiikdeaoel";
@@ skipping 548 matching lines @@
   // treated as non-generic handler.
   EXPECT_EQ("Baz", jpg_result[1].task_title());
   EXPECT_FALSE(jpg_result[1].is_generic_file_handler());
   // Qux app provides a handler for all types.
   EXPECT_EQ("Qux", jpg_result[2].task_title());
   EXPECT_TRUE(jpg_result[2].is_generic_file_handler());
 }
 
 }  // namespace file_tasks
 }  // namespace file_manager.