Update Context Client Visibility to use Scoped Pattern

cc/test/test_in_process_context_provider.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/test/test_in_process_context_provider.h"
 
 #include <stdint.h>
 
 #include "base/lazy_instance.h"
 #include "base/macros.h"
@@ skipping 94 matching lines @@
     case PlatformColor::SOURCE_FORMAT_BGRA8:
       capabilities.texture_format_bgra8888 = true;
       break;
   }
   return capabilities;
 }
 
 void TestInProcessContextProvider::DeleteCachedResources() {
   if (gr_context_)
     gr_context_->FreeGpuResources();
+
+  ContextSupport()->TrimResources();
 }
 
 void TestInProcessContextProvider::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {}
 
 }  // namespace cc