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

third_party/WebKit/LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-basic.html

Index: third_party/WebKit/LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-basic.html
diff --git a/third_party/WebKit/LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-basic.html b/third_party/WebKit/LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-basic.html
index ad320eb03746887c8cea25c667d7befe9c39e292..3788f75219178e650ebd6e8b42bfa33abd04fc87 100644
--- a/third_party/WebKit/LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-basic.html
+++ b/third_party/WebKit/LayoutTests/fast/scroll-behavior/scroll-customization/scrollstate-basic.html
@@ -31,24 +31,34 @@ if ('ScrollState' in window) {
   test(function() {
     var deltaX = 12.5;
     var deltaY = 14.9;
-    var deltaGranularity = 148.3;
+    var startPositionX = 16.82;
+    var startPositionY = 82.17;
     var velocityX = 23.7;
     var velocityY = 2.5;
-    var inInertialPhase = true;
     var isBeginning = true;
+    var inInertialPhase = true;
     var isEnding = true;
-    var scrollState = new ScrollState(deltaX, deltaY, deltaGranularity, velocityX,
-                                      velocityY, inInertialPhase, isBeginning, isEnding);
+    var shouldPropagate = false;
+    var fromUserInput = true;
+    var isDirectManipulation = true;
+    var deltaGranularity = 148.3;
+    var scrollState = new ScrollState(deltaX, deltaY, startPositionX, startPositionY,
+                                      velocityX, velocityY, isBeginning, inInertialPhase,
+                                      isEnding, shouldPropagate, fromUserInput,
+                                      isDirectManipulation, deltaGranularity);
     assert_equals(scrollState.deltaX, deltaX);
     assert_equals(scrollState.deltaY, deltaY);
-    assert_equals(scrollState.deltaGranularity, deltaGranularity);
+    assert_equals(scrollState.startPositionX, Math.floor(startPositionX));
+    assert_equals(scrollState.startPositionY, Math.floor(startPositionY));
     assert_equals(scrollState.velocityX, velocityX);
     assert_equals(scrollState.velocityY, velocityY);
-    assert_equals(scrollState.inInertialPhase, inInertialPhase);
     assert_equals(scrollState.isBeginning, isBeginning);
+    assert_equals(scrollState.inInertialPhase, inInertialPhase);
     assert_equals(scrollState.isEnding, isEnding);
-    assert_equals(scrollState.fromUserInput, false);
-    assert_equals(scrollState.shouldPropagate, true);
+    assert_equals(scrollState.shouldPropagate, shouldPropagate);
+    assert_equals(scrollState.fromUserInput, fromUserInput);
+    assert_equals(scrollState.isDirectManipulation, isDirectManipulation);
+    assert_equals(scrollState.deltaGranularity, deltaGranularity);
   }, "Constructor behaves correctly.");
 
   test(function() {