cc: Support on demand raster with ganesh

cc/output/gl_renderer.cc

 // Copyright 2010 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 <algorithm>
 #include <limits>
 #include <set>
 #include <string>
@@ skipping 1894 matching lines @@
 
     on_demand_tile_raster_resource_id_ =
         resource_provider_->CreateGLTexture(quad->texture_size,
                                             GL_TEXTURE_2D,
                                             GL_TEXTURE_POOL_UNMANAGED_CHROMIUM,
                                             GL_CLAMP_TO_EDGE,
                                             ResourceProvider::TextureUsageAny,
                                             quad->texture_format);
   }
 
-  // Create and run on-demand raster task for tile.
-  scoped_refptr<Task> on_demand_raster_task(
-      new OnDemandRasterTaskImpl(quad->picture_pile,
-                                 &on_demand_tile_raster_bitmap_,
-                                 quad->content_rect,
-                                 quad->contents_scale));
-  RunOnDemandRasterTask(on_demand_raster_task.get());
+  if (client_->UseTaskGraphRunnerForOnDemandRaster()) {
+    // Create and run on-demand raster task for tile.
+    scoped_refptr<Task> on_demand_raster_task(
+        new OnDemandRasterTaskImpl(quad->picture_pile,
+                                   &on_demand_tile_raster_bitmap_,
+                                   quad->content_rect,
+                                   quad->contents_scale));
+    RunOnDemandRasterTask(on_demand_raster_task.get());
+  } else {
+    SkBitmapDevice device(on_demand_tile_raster_bitmap_);
+    SkCanvas canvas(&device);
+    quad->picture_pile->RasterToBitmap(
+        &canvas, quad->content_rect, quad->contents_scale, NULL);
+  }
 
   uint8_t* bitmap_pixels = NULL;
   SkBitmap on_demand_tile_raster_bitmap_dest;
   SkColorType colorType = ResourceFormatToSkColorType(quad->texture_format);
   if (on_demand_tile_raster_bitmap_.colorType() != colorType) {
     on_demand_tile_raster_bitmap_.copyTo(&on_demand_tile_raster_bitmap_dest,
                                          colorType);
     // TODO(kaanb): The GL pipeline assumes a 4-byte alignment for the
     // bitmap data. This check will be removed once crbug.com/293728 is fixed.
     CHECK_EQ(0u, on_demand_tile_raster_bitmap_dest.rowBytes() % 4);
@@ skipping 1259 matching lines @@
     context_support_->ScheduleOverlayPlane(
         overlay.plane_z_order,
         overlay.transform,
         pending_overlay_resources_.back()->texture_id(),
         overlay.display_rect,
         overlay.uv_rect);
   }
 }
 
 }  // namespace cc