Raster PictureLayerTiling with fractional translation

cc/raster/raster_buffer_provider.cc

Index: cc/raster/raster_buffer_provider.cc
diff --git a/cc/raster/raster_buffer_provider.cc b/cc/raster/raster_buffer_provider.cc
index bb49ae01a2b6c4184751f98ba30a3077ff75097b..267654b6d23ce5be57be5c623613a3e5323423ee 100644
--- a/cc/raster/raster_buffer_provider.cc
+++ b/cc/raster/raster_buffer_provider.cc
@@ -7,6 +7,7 @@
 #include <stddef.h>
 
 #include "base/trace_event/trace_event.h"
+#include "cc/base/scale_translate2d.h"
 #include "cc/raster/raster_source.h"
 #include "cc/raster/texture_compressor.h"
 #include "cc/resources/platform_color.h"
@@ -52,7 +53,7 @@ void RasterBufferProvider::PlaybackToMemory(
     const RasterSource* raster_source,
     const gfx::Rect& canvas_bitmap_rect,
     const gfx::Rect& canvas_playback_rect,
-    float scale,
+    const ScaleTranslate2d& transform,
     const gfx::ColorSpace& target_color_space,
     const RasterSource::PlaybackSettings& playback_settings) {
   TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("cc.debug"),
@@ -83,7 +84,7 @@ void RasterBufferProvider::PlaybackToMemory(
           SkSurface::MakeRasterDirect(info, memory, stride, &surface_props);
       raster_source->PlaybackToCanvas(surface->getCanvas(), target_color_space,
                                       canvas_bitmap_rect, canvas_playback_rect,
-                                      scale, playback_settings);
+                                      transform, playback_settings);
       return;
     }
     case RGBA_4444:
@@ -93,7 +94,7 @@ void RasterBufferProvider::PlaybackToMemory(
       // playback rect passed to PlaybackToCanvas. crbug.com/519070
       raster_source->PlaybackToCanvas(surface->getCanvas(), target_color_space,
                                       canvas_bitmap_rect, canvas_bitmap_rect,
-                                      scale, playback_settings);
+                                      transform, playback_settings);
 
       if (format == ETC1) {
         TRACE_EVENT0("cc",