cc: Drop ContextProvider references on the impl thread before quitting

cc/test/pixel_test.h

 // 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 "base/file_util.h"
 #include "cc/output/gl_renderer.h"
 #include "cc/output/software_renderer.h"
 #include "cc/quads/render_pass.h"
 #include "cc/test/pixel_comparator.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 29 matching lines @@
       RenderPass* target,
       OffscreenContextOption provide_offscreen_context,
       const base::FilePath& ref_file,
       const PixelComparator& comparator);
 
   LayerTreeSettings settings_;
   gfx::Size device_viewport_size_;
   class PixelTestRendererClient;
   scoped_ptr<OutputSurface> output_surface_;
   scoped_ptr<ResourceProvider> resource_provider_;
+  scoped_ptr<TextureMailboxDeleter> texture_mailbox_deleter_;
   scoped_ptr<PixelTestRendererClient> fake_client_;
   scoped_ptr<DirectRenderer> renderer_;
   scoped_ptr<SkBitmap> result_bitmap_;
 
   void SetUpGLRenderer(bool use_skia_gpu_backend);
   void SetUpSoftwareRenderer();
 
   void ForceExpandedViewport(gfx::Size surface_expansion,
                              gfx::Vector2d viewport_offset);
   void ForceDeviceClip(gfx::Rect clip);
@@ skipping 22 matching lines @@
 };
 
 // A simple wrapper to differentiate a renderer that should use ganesh
 // and one that shouldn't in templates.
 class GLRendererWithSkiaGPUBackend : public GLRenderer {
  public:
   GLRendererWithSkiaGPUBackend(RendererClient* client,
                                const LayerTreeSettings* settings,
                                OutputSurface* output_surface,
                                ResourceProvider* resource_provider,
+                               TextureMailboxDeleter* texture_mailbox_deleter,
                                int highp_threshold_min)
       : GLRenderer(client,
                    settings,
                    output_surface,
                    resource_provider,
+                   texture_mailbox_deleter,
                    highp_threshold_min) {}
 };
 
 // Wrappers to differentiate renderers where the the output surface and viewport
 // have an externally determined size and offset.
 class GLRendererWithExpandedViewport : public GLRenderer {
  public:
   GLRendererWithExpandedViewport(RendererClient* client,
                                  const LayerTreeSettings* settings,
                                  OutputSurface* output_surface,
                                  ResourceProvider* resource_provider,
+                                 TextureMailboxDeleter* texture_mailbox_deleter,
                                  int highp_threshold_min)
       : GLRenderer(client,
                    settings,
                    output_surface,
                    resource_provider,
+                   texture_mailbox_deleter,
                    highp_threshold_min) {}
 };
 
 class SoftwareRendererWithExpandedViewport : public SoftwareRenderer {
  public:
   SoftwareRendererWithExpandedViewport(RendererClient* client,
                                        const LayerTreeSettings* settings,
                                        OutputSurface* output_surface,
                                        ResourceProvider* resource_provider)
       : SoftwareRenderer(client, settings, output_surface, resource_provider) {}
@@ skipping 85 matching lines @@
 }
 
 typedef RendererPixelTest<GLRenderer> GLRendererPixelTest;
 typedef RendererPixelTest<GLRendererWithSkiaGPUBackend>
     GLRendererSkiaGPUBackendPixelTest;
 typedef RendererPixelTest<SoftwareRenderer> SoftwareRendererPixelTest;
 
 }  // namespace cc
 
 #endif  // CC_TEST_PIXEL_TEST_H_