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

chrome/browser/media_galleries/media_galleries_scan_result_controller_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/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/run_loop.h"
@@ skipping 34 matching lines @@
     EXPECT_FALSE(dialog_);
   }
 
   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_.reset(new MediaGalleriesPreferences(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);
     extension_ = AddMediaGalleriesApp("read", read_permissions, profile_.get());
@@ skipping 347 matching lines @@
   MediaGalleriesDialogController::Entries results =
       controller()->GetSectionEntries(0);
   ASSERT_EQ(5U, results.size());
   EXPECT_EQ(first, results[0].pref_info.pref_id);
   EXPECT_EQ(second, results[1].pref_info.pref_id);
   EXPECT_EQ(third, results[2].pref_info.pref_id);
   EXPECT_EQ(fourth, results[3].pref_info.pref_id);
   EXPECT_EQ(fifth, results[4].pref_info.pref_id);
   controller()->DialogFinished(false);
 }