cc: Get rid of SurfaceDestroyed and use SurfaceDiscarded instead

cc/surfaces/display.h

Index: cc/surfaces/display.h
diff --git a/cc/surfaces/display.h b/cc/surfaces/display.h
index 5e0142a42fbd6b7d2937b377f9ed5f542dc868db..20dec5a0ed728423a5c8224fa039343e33b826ef 100644
--- a/cc/surfaces/display.h
+++ b/cc/surfaces/display.h
@@ -91,7 +91,6 @@ class CC_SURFACES_EXPORT Display : public DisplaySchedulerClient,
                         bool* changed) override;
   void OnSurfaceCreated(const SurfaceInfo& surface_info) override;
   void OnSurfaceDiscarded(const SurfaceId& surface_id) override;
-  void OnSurfaceDestroyed(const SurfaceId& surface_id) override;
   void OnSurfaceDamageExpected(const SurfaceId& surface_id,
                                const BeginFrameArgs& args) override;