DO NOT MERGE. Make sure to invalidate after pulling on an edgeglow.

Fixes b/3111778 overscroll glitch in news & weather

Change-Id: Ic255da1f7c4301ea3980acc4fa033c9f17a60dac

core/java/android/widget/HorizontalScrollView.java

@@ -551,6 +551,10 @@ public class HorizontalScrollView extends FrameLayout {
                                 mEdgeGlowLeft.onRelease();
                             }
                         }
+                        if (mEdgeGlowLeft != null
+                                && (!mEdgeGlowLeft.isFinished() || !mEdgeGlowRight.isFinished())) {
+                            invalidate();
+                        }
                     }
                 }
                 break;

core/java/android/widget/ScrollView.java

@@ -546,6 +546,10 @@ public class ScrollView extends FrameLayout {
                                 mEdgeGlowTop.onRelease();
                             }
                         }
+                        if (mEdgeGlowTop != null
+                                && (!mEdgeGlowTop.isFinished() || !mEdgeGlowBottom.isFinished())) {
+                            invalidate();
+                        }
                     }
                 }
                 break;