Bug 1373525 - gfx/layers: Remove unused member functions Revoke() of AsyncCanvasRenderer Runnables. r=bas

gfx/layers/AsyncCanvasRenderer.cpp:62:10 [-Wunused-member-function] unused member function 'Revoke'
gfx/layers/AsyncCanvasRenderer.cpp:97:10 [-Wunused-member-function] unused member function 'Revoke'

MozReview-Commit-ID: 11CjGtiXIqv

--HG--
extra : source : a1bc00d769d882d1bd8bbc8a34b48751e488fcb9
extra : intermediate-source : 8f7a070ec05778d6a4f42417772bdd552a433ccc
extra : histedit_source : a5f1974899bb0f41975417b922306a387822ad1f

gfx/layers/AsyncCanvasRenderer.cpp

@@ -59,11 +59,6 @@ AsyncCanvasRenderer::NotifyElementAboutAttributesChanged()
       return NS_OK;
     }
 
-    void Revoke()
-    {
-      mRenderer = nullptr;
-    }
-
   private:
     RefPtr<AsyncCanvasRenderer> mRenderer;
   };
@@ -94,11 +89,6 @@ AsyncCanvasRenderer::NotifyElementAboutInvalidation()
       return NS_OK;
     }
 
-    void Revoke()
-    {
-      mRenderer = nullptr;
-    }
-
   private:
     RefPtr<AsyncCanvasRenderer> mRenderer;
   };