[4/5] Add translated rasterization support for PictureLayerTilingSet & below

cc/playback/raster_source.cc

 // Copyright 2014 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/playback/raster_source.h"
 
 #include <stddef.h>
 
 #include "base/trace_event/trace_event.h"
 #include "cc/base/math_util.h"
@@ skipping 201 matching lines @@
 }
 
 size_t RasterSource::GetPictureMemoryUsage() const {
   if (!display_list_)
     return 0;
   return display_list_->ApproximateMemoryUsage() +
          painter_reported_memory_usage_;
 }
 
 bool RasterSource::PerformSolidColorAnalysis(const gfx::Rect& content_rect,
-                                             const gfx::SizeF& raster_scales,
+                                             float raster_scale,
                                              SkColor* color) const {
   TRACE_EVENT0("cc", "RasterSource::PerformSolidColorAnalysis");
 
   gfx::Rect layer_rect = gfx::ScaleToEnclosingRect(
-      content_rect, 1.f / raster_scales.width(), 1.f / raster_scales.height());
+      content_rect, 1.f / raster_scale);
 
   layer_rect.Intersect(gfx::Rect(size_));
   skia::AnalysisCanvas canvas(layer_rect.width(), layer_rect.height());
   canvas.translate(-layer_rect.x(), -layer_rect.y());
   RasterCommon(&canvas, &canvas);
   return canvas.GetColorIfSolid(color);
 }
 
 void RasterSource::GetDiscardableImagesInRect(
     const gfx::Rect& layer_rect,
-    const gfx::SizeF& raster_scales,
+    float raster_scale,
     std::vector<DrawImage>* images) const {
   DCHECK_EQ(0u, images->size());
-  display_list_->GetDiscardableImagesInRect(layer_rect, raster_scales, images);
+  display_list_->GetDiscardableImagesInRect(layer_rect, raster_scale, images);
 }
 
 bool RasterSource::CoversRect(const gfx::Rect& layer_rect) const {
   if (size_.IsEmpty())
     return false;
   gfx::Rect bounded_rect = layer_rect;
   bounded_rect.Intersect(gfx::Rect(size_));
   return recorded_viewport_.Contains(bounded_rect);
 }
 
@@ skipping 52 matching lines @@
   bool can_use_lcd_text = false;
   return scoped_refptr<RasterSource>(new RasterSource(this, can_use_lcd_text));
 }
 
 RasterSource::PlaybackSettings::PlaybackSettings()
     : playback_to_shared_canvas(false),
       skip_images(false),
       use_image_hijack_canvas(true) {}
 
 }  // namespace cc