Send notification from GPU process to browser process of offscreen context creation and destruction…

content/common/webkitplatformsupport_impl.cc

Index: content/common/webkitplatformsupport_impl.cc
diff --git a/content/common/webkitplatformsupport_impl.cc b/content/common/webkitplatformsupport_impl.cc
index 991dc1e13d032c3f5f88a200659834b16506a55b..9344e49112605e139e5041c5615036a453575752 100644
--- a/content/common/webkitplatformsupport_impl.cc
+++ b/content/common/webkitplatformsupport_impl.cc
@@ -68,10 +68,9 @@ WebKitPlatformSupportImpl::createOffscreenGraphicsContext3D(
     return webkit::gpu::WebGraphicsContext3DInProcessImpl::CreateForWebView(
             attributes, false);
   } else {
-    // Intentionally blank URL provided for offscreen contexts -- blank URLs are
-    // ignored in the GPU process for crash reporting.
     return WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
-        GetGpuChannelHostFactory(), attributes, GURL());
+        GetGpuChannelHostFactory(), attributes,
+        attributes.topDocumentURL);
   }
 }