Remove WebGraphicsContext3D getter from cc::ContextProvider

cc/trees/layer_tree_host_unittest_delegated.cc

 // Copyright 2013 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/trees/layer_tree_host.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 325 matching lines @@
 
     TestContextProvider* context_provider = static_cast<TestContextProvider*>(
         host_impl->output_surface()->context_provider().get());
 
     ++num_activates_;
     switch (num_activates_) {
       case 2:
         EXPECT_TRUE(delegated_impl->ChildId());
         EXPECT_FALSE(did_reset_child_id_);
 
-        context_provider->TestContext3d()->loseContextCHROMIUM(
+        context_provider->ContextGL()->LoseContextCHROMIUM(
             GL_GUILTY_CONTEXT_RESET_ARB,
             GL_INNOCENT_CONTEXT_RESET_ARB);
+        context_provider->ContextGL()->Flush();
         break;
       case 3:
         EXPECT_TRUE(delegated_impl->ChildId());
         EXPECT_TRUE(did_reset_child_id_);
         EndTest();
         break;
     }
   }
 
   virtual void InitializedRendererOnThread(LayerTreeHostImpl* host_impl,
@@ skipping 54 matching lines @@
   virtual void DidActivateTreeOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
     if (host_impl->active_tree()->source_frame_number() < 1)
       return;
 
     TestContextProvider* context_provider = static_cast<TestContextProvider*>(
         host_impl->output_surface()->context_provider().get());
 
     ++num_activates_;
     switch (num_activates_) {
       case 2:
-        context_provider->TestContext3d()->loseContextCHROMIUM(
+        context_provider->ContextGL()->LoseContextCHROMIUM(
             GL_GUILTY_CONTEXT_RESET_ARB,
             GL_INNOCENT_CONTEXT_RESET_ARB);
         break;
       case 3:
         EndTest();
         break;
     }
   }
 
   virtual void InitializedRendererOnThread(LayerTreeHostImpl* host_impl,
@@ skipping 1925 matching lines @@
   }
 
   scoped_refptr<DelegatedRendererLayer> delegated_thief_;
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(
     LayerTreeHostDelegatedTestRemoveAndChangeResources);
 
 }  // namespace
 }  // namespace cc