Raster PictureLayerTiling with fractional translation

cc/output/software_renderer.cc

Index: cc/output/software_renderer.cc
diff --git a/cc/output/software_renderer.cc b/cc/output/software_renderer.cc
index 8bd1e38195e2aca400fe994fab7a757886209bf2..884abc35aec2ff7400e17b3d995a6e1868bab648 100644
--- a/cc/output/software_renderer.cc
+++ b/cc/output/software_renderer.cc
@@ -8,6 +8,7 @@
 #include "base/trace_event/trace_event.h"
 #include "cc/base/math_util.h"
 #include "cc/base/render_surface_filters.h"
+#include "cc/base/scale_translate2d.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/output/output_surface.h"
 #include "cc/output/output_surface_frame.h"
@@ -362,11 +363,15 @@ void SoftwareRenderer::DrawPictureQuad(const PictureDrawQuad* quad) {
                                               disable_image_filtering);
     quad->raster_source->PlaybackToCanvas(
         &filtered_canvas, canvas_color_space, quad->content_rect,
-        quad->content_rect, quad->contents_scale, playback_settings);
+        quad->content_rect,
+        ScaleTranslate2d(quad->contents_scale, gfx::Vector2dF()),
+        playback_settings);
   } else {
     quad->raster_source->PlaybackToCanvas(
         current_canvas_, canvas_color_space, quad->content_rect,
-        quad->content_rect, quad->contents_scale, playback_settings);
+        quad->content_rect,
+        ScaleTranslate2d(quad->contents_scale, gfx::Vector2dF()),
+        playback_settings);
   }
 }