Add support for new scroll valuators coming from CMT

ui/base/events.h

Index: ui/base/events.h
diff --git a/ui/base/events.h b/ui/base/events.h
index 69f83084f76831a6cf9ec589ea6efc7ef428f612..1822d092f95026dae363545a6a952a7cfea9174f 100644
--- a/ui/base/events.h
+++ b/ui/base/events.h
@@ -35,6 +35,7 @@ enum EventType {
   ET_TOUCH_CANCELLED,
   ET_DROP_TARGET_EVENT,
   ET_FOCUS_CHANGE,
+  ET_SCROLL,
 };
 
 // Event flags currently supported
@@ -111,6 +112,10 @@ UI_EXPORT float GetTouchAngle(const base::NativeEvent& native_event);
 // Gets the force from a native_event. Normalized to be [0, 1]. Default is 0.0.
 UI_EXPORT float GetTouchForce(const base::NativeEvent& native_event);
 
+UI_EXPORT bool GetScrollOffsets(const base::NativeEvent& native_event,

[Ben Goodger (Google), 2011/12/14 19:01:39]

Offset from what?

[DaveMoore, 2011/12/14 21:26:04]

Scrolls are always deltas. I can use a different word if you like
Distances, Deltas, Amounts, Offsets

On 2011/12/14 19:01:39, Ben Goodger (Google) wrote:

+                                float* x_offset,
+                                float* y_offset);
+
 // Creates and returns no-op event.
 UI_EXPORT base::NativeEvent CreateNoopEvent();