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

cc/playback/discardable_image_map.cc

Index: cc/playback/discardable_image_map.cc
diff --git a/cc/playback/discardable_image_map.cc b/cc/playback/discardable_image_map.cc
index 74f830df3470eb8c84e1f8cd846f2d859c4ece77..f75691593d13bb948373660fcd88b8177609a963 100644
--- a/cc/playback/discardable_image_map.cc
+++ b/cc/playback/discardable_image_map.cc
@@ -214,12 +214,12 @@ void DiscardableImageMap::EndGeneratingMetadata() {
 
 void DiscardableImageMap::GetDiscardableImagesInRect(
     const gfx::Rect& rect,
-    const gfx::SizeF& raster_scales,
+    float raster_scale,
     std::vector<DrawImage>* images) const {
   std::vector<size_t> indices;
   images_rtree_.Search(rect, &indices);
   for (size_t index : indices)
-    images->push_back(all_images_[index].first.ApplyScale(raster_scales));
+    images->push_back(all_images_[index].first.ApplyScale(raster_scale));
 }
 
 Region DiscardableImageMap::GetRegionForImage(uint32_t image_id) const {