Revert of Verify paintedOutputOfObjectHasNoEffectRegardlessOfSize during painting

third_party/WebKit/Source/platform/graphics/paint/DisplayItemClient.h

Index: third_party/WebKit/Source/platform/graphics/paint/DisplayItemClient.h
diff --git a/third_party/WebKit/Source/platform/graphics/paint/DisplayItemClient.h b/third_party/WebKit/Source/platform/graphics/paint/DisplayItemClient.h
index fb47d824b2b8949868f9534a8010b5327d59d635..25a5bcd9faa5cb3f5707b936f24a59779595f33d 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/DisplayItemClient.h
+++ b/third_party/WebKit/Source/platform/graphics/paint/DisplayItemClient.h
@@ -54,20 +54,6 @@
   // object that owns the GraphicsLayer, i.e. offset by
   // offsetFromLayoutObjectWithSubpixelAccumulation().
   virtual LayoutRect visualRect() const = 0;
-
-  // This is declared here instead of in LayoutObject for verifying the
-  // condition in DrawingRecorder.
-  // Returns true if the object itself will not generate any effective painted
-  // output no matter what size the object is. For example, this function can
-  // return false for an object whose size is currently 0x0 but would have
-  // effective painted output if it was set a non-empty size. It's used to skip
-  // unforced paint invalidation of LayoutObjects (which is when
-  // shouldDoFullPaintInvalidation is false, but mayNeedPaintInvalidation or
-  // childShouldCheckForPaintInvalidation is true) to avoid unnecessary paint
-  // invalidations of empty areas covered by such objects.
-  virtual bool paintedOutputOfObjectHasNoEffectRegardlessOfSize() const {
-    return false;
-  }
 
   void setDisplayItemsUncached(
       PaintInvalidationReason reason = PaintInvalidationFull) const {