Part 1/3 (compositor) of adding with device scale factor to transport surfaces

cc/output/output_surface.cc

Index: cc/output/output_surface.cc
diff --git a/cc/output/output_surface.cc b/cc/output/output_surface.cc
index 7a7bdb00ac52e6a9be839d2eb0d59a79c73a34bb..b471a08b8ee49eac73f29e4520b55d13b83d6307 100644
--- a/cc/output/output_surface.cc
+++ b/cc/output/output_surface.cc
@@ -112,9 +112,9 @@ void OutputSurface::DiscardBackbuffer() {
     context3d_->discardBackbufferCHROMIUM();
 }
 
-void OutputSurface::Reshape(gfx::Size size) {
+void OutputSurface::Reshape(gfx::Size size, float scale_factor) {
   DCHECK(context3d_);
-  context3d_->reshape(size.width(), size.height());
+  context3d_->reshapeWithScaleFactor(size.width(), size.height(), scale_factor);
 }
 
 void OutputSurface::BindFramebuffer() {