Send a message through the ozone channel to recreate buffers

cc/output/output_surface.h

Index: cc/output/output_surface.h
diff --git a/cc/output/output_surface.h b/cc/output/output_surface.h
index deaf97b4825abbd457b91d063fdcf5c06f2bcd8f..36ef43791c2cf862298b17a7e6522d3d6519153d 100644
--- a/cc/output/output_surface.h
+++ b/cc/output/output_surface.h
@@ -120,6 +120,8 @@ class CC_EXPORT OutputSurface {
   virtual void Reshape(const gfx::Size& size, float scale_factor);
   virtual gfx::Size SurfaceSize() const;
 
+  virtual void RecreateBuffers();
+
   // If supported, this causes a ReclaimResources for all resources that are
   // currently in use.
   virtual void ForceReclaimResources() {}