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

chrome/browser/media_galleries/media_scan_manager_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/base_paths.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 88 matching lines @@
     EXPECT_EQ(find_folders_start_count_, find_folders_destroy_count_);
   }
 
   void SetUp() override {
     ASSERT_TRUE(storage_monitor::TestStorageMonitor::CreateAndInstall());
 
     extensions::TestExtensionSystem* extension_system(
         static_cast<extensions::TestExtensionSystem*>(
             extensions::ExtensionSystem::Get(profile_.get())));
     extension_system->CreateExtensionService(
-        CommandLine::ForCurrentProcess(), base::FilePath(), false);
+        base::CommandLine::ForCurrentProcess(), base::FilePath(), false);
 
     gallery_prefs_ =
         MediaGalleriesPreferencesFactory::GetForProfile(profile_.get());
     base::RunLoop loop;
     gallery_prefs_->EnsureInitialized(loop.QuitClosure());
     loop.Run();
 
     std::vector<std::string> read_permissions;
     read_permissions.push_back(
         extensions::MediaGalleriesPermission::kReadPermission);
@@ skipping 602 matching lines @@
   file_counts.audio_count *= kGalleriesAdded;
   file_counts.image_count *= kGalleriesAdded;
   file_counts.video_count *= kGalleriesAdded;
   SetExpectedScanResults(kGalleriesAdded, file_counts);
   StartScan();
 
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(1, FindFolderDestroyCount());
   EXPECT_EQ(galleries_before + kGalleriesAdded, gallery_count());
 }