(not for commit) Create 2nd ContextProvider for Ganesh rasterization.

ui/compositor/test/in_process_context_factory.cc

 // Copyright 2014 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 "ui/compositor/test/in_process_context_factory.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/threading/thread.h"
 #include "cc/output/compositor_frame.h"
@@ skipping 90 matching lines @@
   attribs.bind_generates_resource = false;
   bool lose_context_when_out_of_memory = true;
 
   scoped_refptr<InProcessContextProvider> context_provider =
       InProcessContextProvider::Create(attribs, lose_context_when_out_of_memory,
                                        compositor->widget(), "UICompositor");
 
   if (use_test_surface_) {
     bool flipped_output_surface = false;
     compositor->SetOutputSurface(make_scoped_ptr(new cc::PixelTestOutputSurface(
-        context_provider, flipped_output_surface)));
+        context_provider, nullptr, flipped_output_surface)));
   } else {
     compositor->SetOutputSurface(
         make_scoped_ptr(new DirectOutputSurface(context_provider)));
   }
 }
 
 scoped_refptr<Reflector> InProcessContextFactory::CreateReflector(
     Compositor* mirroed_compositor,
     Layer* mirroring_layer) {
   return new Reflector();
@@ skipping 43 matching lines @@
 InProcessContextFactory::CreateSurfaceIdAllocator() {
   return make_scoped_ptr(
       new cc::SurfaceIdAllocator(next_surface_id_namespace_++));
 }
 
 void InProcessContextFactory::ResizeDisplay(ui::Compositor* compositor,
                                             const gfx::Size& size) {
 }
 
 }  // namespace ui