Fix for crash when attaching a frame in WebUI renderer.

content/renderer/skia_benchmarking_extension.cc

Index: content/renderer/skia_benchmarking_extension.cc
diff --git a/content/renderer/skia_benchmarking_extension.cc b/content/renderer/skia_benchmarking_extension.cc
index 6d29155b141d0e1ac4c4a039115110c34457d2a8..ab565a650d2dce29b9e25b5c224180a0a69d456e 100644
--- a/content/renderer/skia_benchmarking_extension.cc
+++ b/content/renderer/skia_benchmarking_extension.cc
@@ -10,6 +10,7 @@
 #include "cc/base/math_util.h"
 #include "cc/resources/picture.h"
 #include "content/public/renderer/v8_value_converter.h"
+#include "content/renderer/chrome_object_extensions_utils.h"
 #include "content/renderer/render_thread_impl.h"
 #include "gin/arguments.h"
 #include "gin/handle.h"
@@ -77,13 +78,8 @@ void SkiaBenchmarking::Install(blink::WebFrame* frame) {
   if (controller.IsEmpty())
     return;
 
-  v8::Handle<v8::Object> global = context->Global();
-  v8::Handle<v8::Object> chrome =
-      global->Get(gin::StringToV8(isolate, "chrome"))->ToObject();
-  if (chrome.IsEmpty()) {
-    chrome = v8::Object::New(isolate);
-    global->Set(gin::StringToV8(isolate, "chrome"), chrome);
-  }
+  v8::Handle<v8::Object> chrome = GetOrCreateChromeObject(isolate,
+                                                          context->Global());
   chrome->Set(gin::StringToV8(isolate, "skiaBenchmarking"), controller.ToV8());
 }