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

content/renderer/gpu/mailbox_output_surface.h

Index: content/renderer/gpu/mailbox_output_surface.h
diff --git a/content/renderer/gpu/mailbox_output_surface.h b/content/renderer/gpu/mailbox_output_surface.h
index 7c159bed8492104188d757a64e88b07f24fd79b1..77fc7d468320827c17ad9c3c071c2fa37bc05b9e 100644
--- a/content/renderer/gpu/mailbox_output_surface.h
+++ b/content/renderer/gpu/mailbox_output_surface.h
@@ -32,7 +32,7 @@ class MailboxOutputSurface : public CompositorOutputSurface {
   virtual void SendFrameToParentCompositor(cc::CompositorFrame* frame) OVERRIDE;
   virtual void EnsureBackbuffer() OVERRIDE;
   virtual void DiscardBackbuffer() OVERRIDE;
-  virtual void Reshape(gfx::Size size) OVERRIDE;
+  virtual void Reshape(gfx::Size size, float scale_factor) OVERRIDE;
   virtual void BindFramebuffer() OVERRIDE;
   virtual void PostSubBuffer(gfx::Rect rect, const cc::LatencyInfo&) OVERRIDE;
   virtual void SwapBuffers(const cc::LatencyInfo&) OVERRIDE;