cc: Remove LayerTreeHostImpl::FrameData::render_passes_by_id.

cc/output/delegating_renderer_unittest.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/output/delegating_renderer.h"
 
 #include "cc/test/fake_output_surface.h"
 #include "cc/test/layer_tree_test.h"
 #include "cc/test/render_pass_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 69 matching lines @@
 class DelegatingRendererTestResources : public DelegatingRendererTest {
  public:
   void BeginTest() override { PostSetNeedsCommitToMainThread(); }
 
   void AfterTest() override {}
 
   DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
                                    LayerTreeHostImpl::FrameData* frame,
                                    DrawResult draw_result) override {
     frame->render_passes.clear();
-    frame->render_passes_by_id.clear();
 
     RenderPass* child_pass =
         AddRenderPass(&frame->render_passes, RenderPassId(2, 1),
                       gfx::Rect(3, 3, 10, 10), gfx::Transform());
     uint32_t mailbox_sync_point;
     AddOneOfEveryQuadType(child_pass, host_impl->resource_provider(),
                           RenderPassId(0, 0), &mailbox_sync_point);
 
     RenderPass* pass = AddRenderPass(&frame->render_passes, RenderPassId(1, 1),
                                      gfx::Rect(3, 3, 10, 10), gfx::Transform());
@@ skipping 22 matching lines @@
     EXPECT_EQ(24u, last_frame.delegated_frame_data->resource_list.size());
 
     EndTest();
   }
 };
 
 SINGLE_AND_MULTI_THREAD_DELEGATING_RENDERER_TEST_F(
     DelegatingRendererTestResources);
 
 }  // namespace cc