Bug 1349418 - Remove checkerboarding code and just use an opaque background color behind root scroll frames. r=kats

gfx/layers/LayerAttributes.h

@@ -44,13 +44,6 @@ public:
   // All set methods return true if values changed, false otherwise.
   //
 
-  bool SetLayerBounds(const gfx::IntRect& aLayerBounds) {
-    if (mLayerBounds.IsEqualEdges(aLayerBounds)) {
-      return false;
-    }
-    mLayerBounds = aLayerBounds;
-    return true;
-  }
   bool SetPostScale(float aXScale, float aYScale) {
     if (mPostXScale == aXScale && mPostYScale == aYScale) {
       return false;
@@ -174,9 +167,6 @@ public:
   // Getters.
   //
 
-  const gfx::IntRect& LayerBounds() const {
-    return mLayerBounds;
-  }
   float PostXScale() const {
     return mPostXScale;
   }
@@ -244,8 +234,7 @@ public:
   }
 
   bool operator ==(const SimpleLayerAttributes& aOther) const {
-    return mLayerBounds == aOther.mLayerBounds &&
-           mTransform == aOther.mTransform &&
+    return mTransform == aOther.mTransform &&
            mTransformIsPerspective == aOther.mTransformIsPerspective &&
            mScrolledClip == aOther.mScrolledClip &&
            mPostXScale == aOther.mPostXScale &&
@@ -262,7 +251,6 @@ public:
   }
 
 private:
-  gfx::IntRect mLayerBounds;
   gfx::Matrix4x4 mTransform;
   bool mTransformIsPerspective;
   Maybe<LayerClip> mScrolledClip;