cc: Use gfx:: Geometry types for positions, bounds, and related things.

cc/scrollbar_animation_controller.cc

Index: cc/scrollbar_animation_controller.cc
diff --git a/cc/scrollbar_animation_controller.cc b/cc/scrollbar_animation_controller.cc
index 764f0690d17cc1b3a0a0d10427135bbb97f089e8..7335e2c3a1855626743299657b4e44dc83c67202 100644
--- a/cc/scrollbar_animation_controller.cc
+++ b/cc/scrollbar_animation_controller.cc
@@ -65,10 +65,10 @@ void ScrollbarAnimationController::updateScrollOffset(LayerImpl* scrollLayer)
     updateScrollOffsetAtTime(scrollLayer, (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF());
 }
 
-IntSize ScrollbarAnimationController::getScrollLayerBounds(const LayerImpl* scrollLayer)
+gfx::Size ScrollbarAnimationController::getScrollLayerBounds(const LayerImpl* scrollLayer)
 {
     if (!scrollLayer->children().size())
-        return IntSize();
+        return gfx::Size();
     // Copy & paste from LayerTreeHostImpl...
     // FIXME: Hardcoding the first child here is weird. Think of
     // a cleaner way to get the contentBounds on the Impl side.