DO NOT MERGE Only show edge glow effect on 1 side at a time.

Pulling on a side should force the opposite side into "decay".
Fixes b/3061753  new list "bounce" shouldn't show on both ends
This fixes scroller and horizontalscroller.

Change-Id: I4d9820c7178378b793ed9a29b119943eb1f46587

core/java/android/widget/HorizontalScrollView.java

@@ -542,8 +542,14 @@ public class HorizontalScrollView extends FrameLayout {
                         final int pulledToX = oldX + deltaX;
                         if (pulledToX < 0) {
                             mEdgeGlowLeft.onPull((float) deltaX / getWidth());
+                            if (!mEdgeGlowRight.isFinished()) {
+                                mEdgeGlowRight.onRelease();
+                            }
                         } else if (pulledToX > range) {
                             mEdgeGlowRight.onPull((float) deltaX / getWidth());
+                            if (!mEdgeGlowLeft.isFinished()) {
+                                mEdgeGlowLeft.onRelease();
+                            }
                         }
                     }
                 }

core/java/android/widget/ScrollView.java

@@ -537,8 +537,14 @@ public class ScrollView extends FrameLayout {
                         final int pulledToY = oldY + deltaY;
                         if (pulledToY < 0) {
                             mEdgeGlowTop.onPull((float) deltaY / getHeight());
+                            if (!mEdgeGlowBottom.isFinished()) {
+                                mEdgeGlowBottom.onRelease();
+                            }
                         } else if (pulledToY > range) {
                             mEdgeGlowBottom.onPull((float) deltaY / getHeight());
+                            if (!mEdgeGlowTop.isFinished()) {
+                                mEdgeGlowTop.onRelease();
+                            }
                         }
                     }
                 }