Revert 196592 "cc: Async readback."

suspected to break cc_unittests GLRendererPixelTest.AxisAligned on multiple bots

> cc: Async readback.
>
> Provide a path to get a readback of a layer's subtree via an
> asynchronous mechanism.
>
> This path is used for all the cc pixel tests, to show that it
> works. Also by some unit tests:
>
> LayerTreeHostTestAsyncReadback.GLRenderer_RunSingleThread
> LayerTreeHostTestAsyncReadback.GLRenderer_RunMultiThread
> LayerTreeHostTestAsyncReadback.SoftwareRenderer_RunSingleThread
> LayerTreeHostTestAsyncReadback.SoftwareRenderer_RunMultiThread
> LayerTreeHostTestAsyncReadbackLayerDestroyed.RunSingleThread
> LayerTreeHostTestAsyncReadbackLayerDestroyed.RunMultiThread
>
> BUG=179896
>
> Review URL: https://chromiumcodereview.appspot.com/14060015

TBR=danakj@chromium.org

Review URL: https://codereview.chromium.org/14510002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@196605 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 5 deletions

diff --git a/cc/quads/render_pass_unittest.cc b/cc/quads/render_pass_unittest.cc
index 9ab0123..f2271b5 100644
--- a/cc/quads/render_pass_unittest.cc
+++ b/cc/quads/render_pass_unittest.cc
@@ -29,7 +29,6 @@ struct RenderPassSize {
   gfx::RectF damage_rect;
   bool has_transparent_background;
   bool has_occlusion_from_outside_target_surface;
-  std::vector<RenderPass::RequestCopyAsBitmapCallback> copy_callbacks;
 };
 
 TEST(RenderPassTest, CopyShouldBeIdenticalExceptIdAndQuads) {
@@ -48,7 +47,6 @@ TEST(RenderPassTest, CopyShouldBeIdenticalExceptIdAndQuads) {
                transform_to_root,
                has_transparent_background,
                has_occlusion_from_outside_target_surface);
-  pass->copy_callbacks.push_back(RenderPass::RequestCopyAsBitmapCallback());
 
   // Stick a quad in the pass, this should not get copied.
   scoped_ptr<SharedQuadState> shared_state = SharedQuadState::Create();
@@ -74,9 +72,6 @@ TEST(RenderPassTest, CopyShouldBeIdenticalExceptIdAndQuads) {
             copy->has_occlusion_from_outside_target_surface);
   EXPECT_EQ(0u, copy->quad_list.size());
 
-  // The copy callback should not be copied/duplicated.
-  EXPECT_EQ(0u, copy->copy_callbacks.size());
-
   EXPECT_EQ(sizeof(RenderPassSize), sizeof(RenderPass));
 }