Add a flag to disable partial raster in renderer

cc/tiles/tile_manager_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 "base/run_loop.h"
 #include "base/thread_task_runner_handle.h"
 #include "cc/playback/display_list_raster_source.h"
 #include "cc/playback/display_list_recording_source.h"
 #include "cc/raster/raster_buffer.h"
 #include "cc/resources/resource_pool.h"
@@ skipping 1405 matching lines @@
         non_intersecting_rect,  // Soon rect.
         intersecting_rect);     // Eventually rect.
     scoped_ptr<TilingSetRasterQueueAll> queue(
         new TilingSetRasterQueueAll(tiling_set.get(), false));
     EXPECT_FALSE(queue->IsEmpty());
   }
 }
 
 class TileManagerTest : public testing::Test {
  public:
-  TileManagerTest()
-      : output_surface_(FakeOutputSurface::CreateSoftware(
-            make_scoped_ptr(new SoftwareOutputDevice))),
-        host_impl_(new MockLayerTreeHostImpl(&proxy_,
-                                             &shared_bitmap_manager_,
-                                             &task_graph_runner_)) {
+  void SetUp() override {
+    output_surface_ = FakeOutputSurface::CreateSoftware(
+        make_scoped_ptr(new SoftwareOutputDevice));
+    LayerTreeSettings settings;
+    CustomizeSettings(&settings);
+    host_impl_.reset(new MockLayerTreeHostImpl(
+        settings, &proxy_, &shared_bitmap_manager_, &task_graph_runner_));
     host_impl_->InitializeRenderer(output_surface_.get());
   }
 
  protected:
   // MockLayerTreeHostImpl allows us to intercept tile manager callbacks.
   class MockLayerTreeHostImpl : public FakeLayerTreeHostImpl {
    public:
-    MockLayerTreeHostImpl(Proxy* proxy,
+    MockLayerTreeHostImpl(const LayerTreeSettings& settings,
+                          Proxy* proxy,
                           SharedBitmapManager* manager,
                           TaskGraphRunner* task_graph_runner)
-        : FakeLayerTreeHostImpl(proxy, manager, task_graph_runner) {}
+        : FakeLayerTreeHostImpl(settings, proxy, manager, task_graph_runner) {}
 
     MOCK_METHOD0(NotifyAllTileTasksCompleted, void());
   };
 
+  // By default do no customization.
+  virtual void CustomizeSettings(LayerTreeSettings* settings) {}
+
   TestSharedBitmapManager shared_bitmap_manager_;
   TestTaskGraphRunner task_graph_runner_;
   FakeImplProxy proxy_;
   scoped_ptr<OutputSurface> output_surface_;
   scoped_ptr<MockLayerTreeHostImpl> host_impl_;
 };
 
 // Test to ensure that we call NotifyAllTileTasksCompleted when PrepareTiles is
 // called.
 TEST_F(TileManagerTest, AllWorkFinishedTest) {
@@ skipping 137 matching lines @@
       uint64_t resource_content_id,
       uint64_t previous_content_id) override {
     NOTREACHED();
     return nullptr;
   }
   void ReleaseBufferForRaster(scoped_ptr<RasterBuffer> buffer) override {}
 
   ~CancellingTileTaskRunner() override {}
 };
 
+class PartialRasterTileManagerTest : public TileManagerTest {
+ public:
+  void CustomizeSettings(LayerTreeSettings* settings) override {
+    settings->enable_partial_raster = true;
+  }
+};
+
 // Ensures that if a raster task is cancelled, it gets returned to the resource
 // pool with an invalid content ID, not with its invalidated content ID.
-TEST_F(TileManagerTest, CancelledTasksHaveNoContentId) {
+TEST_F(PartialRasterTileManagerTest, CancelledTasksHaveNoContentId) {
   // Create a CancellingTaskRunner and set it on the tile manager so that all
   // scheduled work is immediately cancelled.
   CancellingTileTaskRunner cancelling_runner;
   host_impl_->tile_manager()->SetTileTaskRunnerForTesting(&cancelling_runner);
 
   // Pick arbitrary IDs - they don't really matter as long as they're constant.
   int layer_id = 7;
   int invalidated_id = 43;
 
   scoped_refptr<FakeDisplayListRasterSource> pending_raster_source =
@@ skipping 31 matching lines @@
   EXPECT_FALSE(host_impl_->resource_pool()->TryAcquireResourceWithContentId(
       invalidated_id));
 
   // Free our host_impl_ before the cancelling_runner we passed it, as it will
   // use that class in clean up.
   host_impl_ = nullptr;
 }
 
 }  // namespace
 }  // namespace cc