gpu: Add more context labelling.

content/browser/renderer_host/image_transport_factory_android.cc

Index: content/browser/renderer_host/image_transport_factory_android.cc
diff --git a/content/browser/renderer_host/image_transport_factory_android.cc b/content/browser/renderer_host/image_transport_factory_android.cc
index 135e188cf3caccd3122143c03e1e93a6924be932..3cc4a09fb91b0f113018b1078b1e3707cc1cdd27 100644
--- a/content/browser/renderer_host/image_transport_factory_android.cc
+++ b/content/browser/renderer_host/image_transport_factory_android.cc
@@ -59,7 +59,8 @@ DirectGLImageTransportFactory::DirectGLImageTransportFactory() {
                      CreateViewContext(attrs, NULL));
   if (context_->makeContextCurrent())
     context_->pushGroupMarkerEXT(
-        base::StringPrintf("DirectGLImageTransportFactory-%p", this).c_str());
+        base::StringPrintf("DirectGLImageTransportFactory-%p",
+                           context_.get()).c_str());
 }
 
 DirectGLImageTransportFactory::~DirectGLImageTransportFactory() {
@@ -107,7 +108,8 @@ CmdBufferImageTransportFactory::CmdBufferImageTransportFactory() {
 
   if (context_->makeContextCurrent())
     context_->pushGroupMarkerEXT(
-        base::StringPrintf("CmdBufferImageTransportFactory-%p", this).c_str());
+        base::StringPrintf("CmdBufferImageTransportFactory-%p",
+                           context_.get()).c_str());
 }
 
 CmdBufferImageTransportFactory::~CmdBufferImageTransportFactory() {