gpu: Add more context labelling.

cc/output/delegating_renderer.cc

 // Copyright 2012 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 "cc/output/delegating_renderer.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/debug/trace_event.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "cc/output/compositor_frame_ack.h"
 #include "cc/quads/checkerboard_draw_quad.h"
 #include "cc/quads/debug_border_draw_quad.h"
 #include "cc/quads/render_pass.h"
 #include "cc/quads/render_pass_draw_quad.h"
 #include "cc/quads/solid_color_draw_quad.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "cc/quads/tile_draw_quad.h"
 #include "cc/quads/yuv_video_draw_quad.h"
 #include "cc/resources/resource_provider.h"
@@ skipping 37 matching lines @@
   WebGraphicsContext3D* context3d = resource_provider_->GraphicsContext3D();
 
   if (!context3d) {
     // Software compositing.
     return true;
   }
 
   if (!context3d->makeContextCurrent())
     return false;
 
-  context3d->pushGroupMarkerEXT("CompositorContext");
+  std::string unique_context_name = base::StringPrintf(
+      "%s-%p",
+      Settings().compositor_name.c_str(),
+      context3d);
+  context3d->pushGroupMarkerEXT(unique_context_name.c_str());
 
   std::string extensions_string =
       UTF16ToASCII(context3d->getString(GL_EXTENSIONS));
 
   std::vector<std::string> extensions;
   base::SplitString(extensions_string, ' ', &extensions);
 
   // TODO(danakj): We need non-GPU-specific paths for these things. This
   // renderer shouldn't need to use context3d extensions directly.
   bool has_set_visibility = false;
@@ skipping 94 matching lines @@
   if (!context3d)
     return false;
   return context3d->getGraphicsResetStatusARB() != GL_NO_ERROR;
 }
 
 void DelegatingRenderer::SetVisible(bool visible) {
   visible_ = visible;
 }
 
 }  // namespace cc