cc: Support on demand raster with ganesh

cc/trees/layer_tree_host_pixeltest_on_demand_raster.cc

Index: cc/trees/layer_tree_host_pixeltest_on_demand_raster.cc
diff --git a/cc/trees/layer_tree_host_pixeltest_on_demand_raster.cc b/cc/trees/layer_tree_host_pixeltest_on_demand_raster.cc
index 0d31709f289c4bb7df80214d370f3c861ed0c583..81ee99d2fadf9263b5feacb5e9ef1c27085ce319 100644
--- a/cc/trees/layer_tree_host_pixeltest_on_demand_raster.cc
+++ b/cc/trees/layer_tree_host_pixeltest_on_demand_raster.cc
@@ -54,6 +54,8 @@ class LayerTreeHostOnDemandRasterPixelTest : public LayerTreePixelTest {
     // Triggers pixel readback and ends the test.
     LayerTreePixelTest::SwapBuffersOnThread(host_impl, result);
   }
+
+  void RunOnDemandRasterPixelTest();
 };
 
 class BlueYellowLayerClient : public ContentLayerClient {
@@ -91,7 +93,7 @@ class BlueYellowLayerClient : public ContentLayerClient {
   gfx::Rect layer_rect_;
 };
 
-TEST_F(LayerTreeHostOnDemandRasterPixelTest, RasterPictureLayer) {
+void LayerTreeHostOnDemandRasterPixelTest::RunOnDemandRasterPixelTest() {
   // Use multiple colors in a single layer to prevent bypassing on-demand
   // rasterization if a single solid color is detected in picture analysis.
   gfx::Rect layer_rect(200, 200);
@@ -107,6 +109,23 @@ TEST_F(LayerTreeHostOnDemandRasterPixelTest, RasterPictureLayer) {
                base::FilePath(FILE_PATH_LITERAL("blue_yellow.png")));
 }
 
+TEST_F(LayerTreeHostOnDemandRasterPixelTest, RasterPictureLayer) {
+  RunOnDemandRasterPixelTest();
+}
+
+class LayerTreeHostOnDemandRasterPixelTestWithoutTaskGraphRunner
+    : public LayerTreeHostOnDemandRasterPixelTest {
+  virtual void InitializeSettings(LayerTreeSettings* settings) OVERRIDE {
+    LayerTreeHostOnDemandRasterPixelTest::InitializeSettings(settings);
+    settings->gpu_rasterization_forced = true;
+  }
+};
+
+TEST_F(LayerTreeHostOnDemandRasterPixelTestWithoutTaskGraphRunner,
+       RasterPictureLayer) {
+  RunOnDemandRasterPixelTest();
+}
+
 }  // namespace
 }  // namespace cc