Clean up viewport scrolling methods in CC

ui/events/blink/input_handler_proxy_unittest.cc

Index: ui/events/blink/input_handler_proxy_unittest.cc
diff --git a/ui/events/blink/input_handler_proxy_unittest.cc b/ui/events/blink/input_handler_proxy_unittest.cc
index 5db92113fe9fe289029390830e33f52534dda5f0..769eb99f36de43825ea96e96ecaaa3ab202aaee5 100644
--- a/ui/events/blink/input_handler_proxy_unittest.cc
+++ b/ui/events/blink/input_handler_proxy_unittest.cc
@@ -167,7 +167,7 @@ class MockInputHandler : public cc::InputHandler {
   MOCK_METHOD1(SetSynchronousInputHandlerRootScrollOffset,
                void(const gfx::ScrollOffset& root_offset));
 
-  bool IsCurrentlyScrollingInnerViewport() const override {
+  bool IsCurrentlyScrollingViewport() const override {
     return is_scrolling_root_;
   }
   void set_is_scrolling_root(bool is) { is_scrolling_root_ = is; }