Add "Graphics backend" line to chrome://gpu-internals page

chrome/browser/ui/webui/gpu_internals_ui.cc

 // Copyright (c) 2011 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/ui/webui/gpu_internals_ui.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 192 matching lines @@
             IDS_ABOUT_VERSION_UNOFFICIAL));
 
     dict->SetString("command_line",
         CommandLine::ForCurrentProcess()->GetCommandLineString());
   }
 
   dict->SetString("operating_system",
                   base::SysInfo::OperatingSystemName() + " " +
                   base::SysInfo::OperatingSystemVersion());
   dict->SetString("angle_revision", base::UintToString(BUILD_REVISION));
+#if defined(USE_SKIA)
+  dict->SetString("graphics_backend", "Skia");
+#else
+  dict->SetString("graphics_backend", "Core Graphics");
+#endif
   dict->SetString("blacklist_version",
       GpuDataManager::GetInstance()->GetBlacklistVersion());
 
   return dict;
 }
 
 Value* GpuMessageHandler::OnRequestLogMessages(const ListValue*) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   return gpu_data_manager_->log_messages().DeepCopy();
@@ skipping 23 matching lines @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 
 GpuInternalsUI::GpuInternalsUI(TabContents* contents) : ChromeWebUI(contents) {
   AddMessageHandler((new GpuMessageHandler())->Attach(this));
 
   // Set up the chrome://gpu-internals/ source.
   Profile* profile = Profile::FromBrowserContext(contents->browser_context());
   profile->GetChromeURLDataManager()->AddDataSource(CreateGpuHTMLSource());
 }