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

Skia is being used or not.
Review URL: http://codereview.chromium.org/8430001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@107987 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/gpu_internals/info_view.js

@@ -61,6 +61,10 @@ cr.define('gpu', function() {
           {
             description: 'ANGLE revision',
             value: clientInfo.angle_revision
+          },
+          {
+            description: '2D graphics backend',
+            value: clientInfo.graphics_backend
           }]);
       } else {
         this.setText_('client-info', '... loading...');

chrome/browser/ui/webui/gpu_internals_ui.cc

@@ -210,6 +210,11 @@ Value* GpuMessageHandler::OnRequestClientInfo(const ListValue* list) {
                   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());