[3/5] Add translated rasterization support for RasterBuffer & below

cc/raster/raster_buffer.h

Index: cc/raster/raster_buffer.h
diff --git a/cc/raster/raster_buffer.h b/cc/raster/raster_buffer.h
index d045a701f6eaf55bb7c07914400783587d068a81..0de76b350c29083daee4d920ce9422e308ebb23c 100644
--- a/cc/raster/raster_buffer.h
+++ b/cc/raster/raster_buffer.h
@@ -11,6 +11,10 @@
 #include "cc/raster/raster_source.h"
 #include "ui/gfx/geometry/rect.h"
 
+namespace gfx {
+class AxisTransform2d;
+}  // namespace gfx
+
 namespace cc {
 
 class CC_EXPORT RasterBuffer {
@@ -23,7 +27,7 @@ class CC_EXPORT RasterBuffer {
       const gfx::Rect& raster_full_rect,
       const gfx::Rect& raster_dirty_rect,
       uint64_t new_content_id,
-      float scale,
+      const gfx::AxisTransform2d& transform,
       const RasterSource::PlaybackSettings& playback_settings) = 0;
 };