Remove implicit conversions from scoped_refptr to T* in chrome/browser/apps/

chrome/browser/apps/drive/drive_app_provider_browsertest.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/apps/drive/drive_app_provider.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
@@ skipping 86 matching lines @@
         InstallExtension(test_data_path, expected_change);
     return extension;
   }
 
   void RefreshDriveAppRegistry() {
     apps_registry_->Update();
     content::RunAllPendingInMessageLoop();
   }
 
   void WaitForPendingDriveAppConverters() {
-    DCHECK(!runner_);
+    DCHECK(!runner_.get());
 
     if (provider_->pending_converters_.empty())
       return;
 
     runner_ = new content::MessageLoopRunner;
 
     pending_drive_app_converter_check_timer_.Start(
         FROM_HERE,
         base::TimeDelta::FromMilliseconds(50),
         base::Bind(&DriveAppProviderTest::OnPendingDriveAppConverterCheckTimer,
                    base::Unretained(this)));
 
     runner_->Run();
 
     pending_drive_app_converter_check_timer_.Stop();
     runner_ = NULL;
   }
 
   void InstallUserUrlApp(const std::string& url) {
-    DCHECK(!runner_);
+    DCHECK(!runner_.get());
     runner_ = new content::MessageLoopRunner;
 
     WebApplicationInfo web_app;
     web_app.title = base::ASCIIToUTF16("User installed Url app");
     web_app.app_url = GURL(url);
 
     scoped_refptr<extensions::CrxInstaller> crx_installer =
         extensions::CrxInstaller::CreateSilent(
             extensions::ExtensionSystem::Get(profile())->extension_service());
     crx_installer->set_creation_flags(Extension::FROM_BOOKMARK);
@@ skipping 306 matching lines @@
   InstallUserUrlApp(kLaunchUrl);
   EXPECT_FALSE(mapping()->IsChromeAppGenerated(url_app_id));
 
   fake_drive_service()->RemoveAppByProductId(kChromeAppId);
   RefreshDriveAppRegistry();
 
   // Url app is still present after the Drive app is disconnected.
   EXPECT_TRUE(ExtensionRegistry::Get(profile())->GetExtensionById(
       url_app_id, ExtensionRegistry::EVERYTHING));
 }