Remove scroll_delta flooring hack

cc/test/fake_layer_tree_host_client.h

Index: cc/test/fake_layer_tree_host_client.h
diff --git a/cc/test/fake_layer_tree_host_client.h b/cc/test/fake_layer_tree_host_client.h
index 8fcafdb78bb9829c6c8925fe93311377e2036203..f5f3504287ad52f2ad8b58a9ab160b28582125c3 100644
--- a/cc/test/fake_layer_tree_host_client.h
+++ b/cc/test/fake_layer_tree_host_client.h
@@ -34,8 +34,8 @@ class FakeLayerTreeHostClient : public LayerTreeHostClient,
   void DidBeginMainFrame() override {}
   void BeginMainFrame(const BeginFrameArgs& args) override {}
   void Layout() override {}
-  void ApplyViewportDeltas(const gfx::Vector2d& inner_delta,
-                           const gfx::Vector2d& outer_delta,
+  void ApplyViewportDeltas(const gfx::Vector2dF& inner_delta,
+                           const gfx::Vector2dF& outer_delta,
                            const gfx::Vector2dF& elastic_overscroll_delta,
                            float page_scale,
                            float top_controls_delta) override {}