Refactor Scroll Customization to share cc::ScrollStateData with blink.

cc/trees/layer_tree_host_unittest_scroll.cc

Index: cc/trees/layer_tree_host_unittest_scroll.cc
diff --git a/cc/trees/layer_tree_host_unittest_scroll.cc b/cc/trees/layer_tree_host_unittest_scroll.cc
index 0c499773a00927a95844abfd7824773d0c17095f..08269d76894c87ff7b0e02f66c64fe67595e7475 100644
--- a/cc/trees/layer_tree_host_unittest_scroll.cc
+++ b/cc/trees/layer_tree_host_unittest_scroll.cc
@@ -30,19 +30,30 @@ namespace cc {
 namespace {
 
 scoped_ptr<ScrollState> BeginState(const gfx::Point& point) {
-  return ScrollState::Create(gfx::Vector2dF(), point, gfx::Vector2dF(), true,
-                             false, false);
+  ScrollStateData scroll_state_data;
+  scroll_state_data.is_beginning = true;
+  scroll_state_data.start_position_x = point.x();
+  scroll_state_data.start_position_y = point.y();
+  scoped_ptr<ScrollState> scroll_state(new ScrollState(scroll_state_data));
+  return scroll_state;
 }
 
 scoped_ptr<ScrollState> UpdateState(const gfx::Point& point,
                                     const gfx::Vector2dF& delta) {
-  return ScrollState::Create(delta, point, gfx::Vector2dF(), false, false,
-                             false);
+  ScrollStateData scroll_state_data;
+  scroll_state_data.delta_x = delta.x();
+  scroll_state_data.delta_y = delta.y();
+  scroll_state_data.start_position_x = point.x();
+  scroll_state_data.start_position_y = point.y();
+  scoped_ptr<ScrollState> scroll_state(new ScrollState(scroll_state_data));
+  return scroll_state;
 }
 
 scoped_ptr<ScrollState> EndState() {
-  return ScrollState::Create(gfx::Vector2dF(), gfx::Point(), gfx::Vector2dF(),
-                             false, false, true);
+  ScrollStateData scroll_state_data;
+  scroll_state_data.is_ending = true;
+  scoped_ptr<ScrollState> scroll_state(new ScrollState(scroll_state_data));
+  return scroll_state;
 }
 
 class LayerTreeHostScrollTest : public LayerTreeTest {