Add flag for drawing layers to screen with Ganesh

cc/layers/picture_layer_impl_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/layers/picture_layer_impl.h"
 
 #include <utility>
 
 #include "cc/layers/append_quads_data.h"
 #include "cc/layers/picture_layer.h"
@@ skipping 150 matching lines @@
     active_pile->RemoveRecordingAt(0, 0);
     active_pile->AddRecordingAt(0, 0);
 
     SkBitmap store;
     store.setConfig(SkBitmap::kNo_Config, 1000, 1000);
     SkDevice device(store);
 
     std::vector<SkRect>::const_iterator rect_iter = rects.begin();
     for (tile_iter = tiles.begin(); tile_iter < tiles.end(); tile_iter++) {
       MockCanvas mock_canvas(&device);
-      active_pile->Raster(&mock_canvas,
-                          (*tile_iter)->content_rect(),
-                          1.0f,
-                          NULL);
+      active_pile->RasterDirect(
+          &mock_canvas, (*tile_iter)->content_rect(), 1.0f, NULL);
 
       // This test verifies that when drawing the contents of a specific tile
       // at content scale 1.0, the playback canvas never receives content from
       // neighboring tiles which indicates that the tile grid embedded in
       // SkPicture is perfectly aligned with the compositor's tiles.
-      // Note: There are two rects: the initial clear and the explicitly
-      // recorded rect. We only care about the second one.
-      EXPECT_EQ(2u, mock_canvas.rects_.size());
-      EXPECT_RECT_EQ(*rect_iter, mock_canvas.rects_[1]);
+      EXPECT_EQ(1u, mock_canvas.rects_.size());
+      EXPECT_RECT_EQ(*rect_iter, mock_canvas.rects_[0]);
       rect_iter++;
     }
   }
 
   FakeImplProxy proxy_;
   FakeLayerTreeHostImpl host_impl_;
   int id_;
   FakePictureLayerImpl* pending_layer_;
   FakePictureLayerImpl* active_layer_;
 
@@ skipping 611 matching lines @@
   AppendQuadsData data;
   data.allow_tile_draw_quads = false;
   active_layer_->AppendQuads(&quad_culler, &data);
 
   ASSERT_EQ(1U, quad_culler.quad_list().size());
   EXPECT_EQ(DrawQuad::PICTURE_CONTENT, quad_culler.quad_list()[0]->material);
 }
 
 }  // namespace
 }  // namespace cc