Hook ScrollElasticityController to InputHandlerProxy

content/renderer/input/input_handler_proxy_unittest.cc

Index: content/renderer/input/input_handler_proxy_unittest.cc
diff --git a/content/renderer/input/input_handler_proxy_unittest.cc b/content/renderer/input/input_handler_proxy_unittest.cc
index 4de546901aa13db2dc99e4e882fa622825456c36..a5e1f9495b1a2d3199dd96eabd0fc46f143915cd 100644
--- a/content/renderer/input/input_handler_proxy_unittest.cc
+++ b/content/renderer/input/input_handler_proxy_unittest.cc
@@ -104,6 +104,11 @@ class MockInputHandler : public cc::InputHandler {
       return scoped_ptr<cc::SwapPromiseMonitor>();
   }
 
+  virtual cc::ScrollElasticityControllerClient*
+  GetScrollElasticityControllerClient() {

[jdduke (slow), 2014/11/12 02:32:24]

Would it be crazy to mock this and add a brief smoke test for
ObserveWheelEventAndResult? Might need to add a message loop to the test harness
to verify the async callback (not sure though).

[ccameron, 2014/11/12 08:15:29]

This definitely needs to be done, but I want to clean up some other things first
(like, make the elasticity controller deterministic first).

+    return NULL;
+  }
+
   virtual void BindToClient(cc::InputHandlerClient* client) override {}
 
   virtual void MouseMoveAt(const gfx::Point& mouse_position) override {}