Remove CompositeAndReadback from LayerTreeHost(Impl) and the Proxys.

cc/output/gl_renderer_unittest.cc

 // Copyright 2012 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/output/gl_renderer.h"
 
 #include <set>
 
 #include "cc/base/math_util.h"
 #include "cc/output/compositor_frame_metadata.h"
@@ skipping 315 matching lines @@
                        1.f,
                        viewport_rect,
                        viewport_rect,
                        false);
   EXPECT_FALSE(renderer_->IsBackbufferDiscarded());
 
   SwapBuffers();
   EXPECT_EQ(1u, output_surface_->num_sent_frames());
 }
 
-TEST_F(GLRendererWithDefaultHarnessTest,
-       FramebufferDiscardedAfterReadbackWhenNotVisible) {
-  gfx::Rect viewport_rect(1, 1);
-  renderer_->SetVisible(false);
-  EXPECT_TRUE(renderer_->IsBackbufferDiscarded());
-  EXPECT_EQ(1, renderer_client_.set_full_root_layer_damage_count());
-
-  AddRenderPass(&render_passes_in_draw_order_,
-                RenderPass::Id(1, 0),
-                viewport_rect,
-                gfx::Transform());
-
-  char pixels[4];
-  renderer_->DrawFrame(&render_passes_in_draw_order_,
-                       1.f,
-                       viewport_rect,
-                       viewport_rect,
-                       false);
-  EXPECT_FALSE(renderer_->IsBackbufferDiscarded());
-
-  renderer_->GetFramebufferPixels(pixels, gfx::Rect(0, 0, 1, 1));
-  EXPECT_TRUE(renderer_->IsBackbufferDiscarded());
-  EXPECT_EQ(2, renderer_client_.set_full_root_layer_damage_count());
-}
-
 TEST_F(GLRendererWithDefaultHarnessTest, ExternalStencil) {
   gfx::Rect viewport_rect(1, 1);
   EXPECT_FALSE(renderer_->stencil_enabled());
 
   output_surface_->set_has_external_stencil_test(true);
 
   TestRenderPass* root_pass = AddRenderPass(&render_passes_in_draw_order_,
                                             RenderPass::Id(1, 0),
                                             viewport_rect,
                                             gfx::Transform());
@@ skipping 1412 matching lines @@
   base::MessageLoop::current()->Run();
 
   // The sync point should have happened.
   EXPECT_EQ(1, sync_point_callback_count);
   EXPECT_EQ(1, other_callback_count);
 }
 #endif  // OS_ANDROID
 
 }  // namespace
 }  // namespace cc