cros: Laser pointer fades out on release, do not cover palette.

ash/laser/laser_pointer_points.h

Index: ash/laser/laser_pointer_points.h
diff --git a/ash/laser/laser_pointer_points.h b/ash/laser/laser_pointer_points.h
index 19e95c1d1b3b1d6598cf47fb5483be7a9d153813..db4ba2e50803fa1f1d20460c7b74940938867cbe 100644
--- a/ash/laser/laser_pointer_points.h
+++ b/ash/laser/laser_pointer_points.h
@@ -33,6 +33,11 @@ class ASH_EXPORT LaserPointerPoints {
 
   // Adds a point. Automatically clears points that are too old.
   void AddPoint(const gfx::Point& point);
+  // Updates the collection latest time. Automatically clears points that are
+  // too

[jdufault, 2016/09/23 23:59:19]

Fix formatting

[sammiequon, 2016/09/26 19:30:38]

Done.

+  // old.
+  void MoveForwardInTime();
+  void MoveForwardInTime(const base::Time& new_latest_time);
   // Removes all points.
   void Clear();
   // Gets the bounding box of the points.
@@ -41,6 +46,10 @@ class ASH_EXPORT LaserPointerPoints {
   LaserPoint GetOldest() const;
   // Returns the newest point in the collection.
   LaserPoint GetNewest() const;
+  // Returns the latest time of the collection.
+  base::Time GetCollectionLatestTime() const;
+  // Returns the earliest time of the collection.
+  base::Time GetCollectionEarliestTime() const;
   // Returns the number of points in the collection.
   int GetNumberOfPoints() const;
   // Whether there are any points or not.
@@ -55,6 +64,9 @@ class ASH_EXPORT LaserPointerPoints {
 
   base::TimeDelta life_duration_;
   std::deque<LaserPoint> points_;
+  // The latest time of the collection of points. This gets updated when new
+  // points are added or when MoveForwardInTime is called.
+  base::Time collection_latest_time_;
 
   DISALLOW_COPY_AND_ASSIGN(LaserPointerPoints);
 };