Raster PictureLayerTiling with fractional translation

cc/raster/one_copy_raster_buffer_provider.cc

Index: cc/raster/one_copy_raster_buffer_provider.cc
diff --git a/cc/raster/one_copy_raster_buffer_provider.cc b/cc/raster/one_copy_raster_buffer_provider.cc
index 31dad67aa86489218b4c6a3444b6c5c1dd656c92..1651aef9f0d966eaec55e53f30c29860ad773cb6 100644
--- a/cc/raster/one_copy_raster_buffer_provider.cc
+++ b/cc/raster/one_copy_raster_buffer_provider.cc
@@ -54,12 +54,12 @@ void OneCopyRasterBufferProvider::RasterBufferImpl::Playback(
     const gfx::Rect& raster_full_rect,
     const gfx::Rect& raster_dirty_rect,
     uint64_t new_content_id,
-    float scale,
+    const ScaleTranslate2d& transform,
     const RasterSource::PlaybackSettings& playback_settings) {
   TRACE_EVENT0("cc", "OneCopyRasterBuffer::Playback");
   client_->PlaybackAndCopyOnWorkerThread(
       resource_, &lock_, sync_token_, raster_source, raster_full_rect,
-      raster_dirty_rect, scale, playback_settings, previous_content_id_,
+      raster_dirty_rect, transform, playback_settings, previous_content_id_,
       new_content_id);
 }
 
@@ -172,7 +172,7 @@ void OneCopyRasterBufferProvider::PlaybackAndCopyOnWorkerThread(
     const RasterSource* raster_source,
     const gfx::Rect& raster_full_rect,
     const gfx::Rect& raster_dirty_rect,
-    float scale,
+    const ScaleTranslate2d& transform,
     const RasterSource::PlaybackSettings& playback_settings,
     uint64_t previous_content_id,
     uint64_t new_content_id) {
@@ -192,7 +192,7 @@ void OneCopyRasterBufferProvider::PlaybackAndCopyOnWorkerThread(
       staging_pool_.AcquireStagingBuffer(resource, previous_content_id);
 
   PlaybackToStagingBuffer(staging_buffer.get(), resource, raster_source,
-                          raster_full_rect, raster_dirty_rect, scale,
+                          raster_full_rect, raster_dirty_rect, transform,
                           playback_settings, previous_content_id,
                           new_content_id);
 
@@ -208,7 +208,7 @@ void OneCopyRasterBufferProvider::PlaybackToStagingBuffer(
     const RasterSource* raster_source,
     const gfx::Rect& raster_full_rect,
     const gfx::Rect& raster_dirty_rect,
-    float scale,
+    const ScaleTranslate2d& transform,
     const RasterSource::PlaybackSettings& playback_settings,
     uint64_t previous_content_id,
     uint64_t new_content_id) {
@@ -258,7 +258,7 @@ void OneCopyRasterBufferProvider::PlaybackToStagingBuffer(
     RasterBufferProvider::PlaybackToMemory(
         buffer->memory(0), resource->format(), staging_buffer->size,
         buffer->stride(0), raster_source, raster_full_rect, playback_rect,
-        scale, playback_settings);
+        transform, playback_settings);
     buffer->Unmap();
     staging_buffer->content_id = new_content_id;
   }