Fixing stutter in AllApps transition

-> Tightened up the interpolator and decreased the duration of the
   AllApps-in animation. This removes many excess frames at the end
   of the transition, and frees up perf for swiping AllApps:
   (issue 5359751)
-> Changed when AllApps state gets reset -- now only after
   leaving home, and then pressing home, or when the screen
   turns off.

Change-Id: I76e988102da91c12cb52af01468cf9a81fe45545

src/com/android/launcher2/AppsCustomizePagedView.java

@@ -1360,8 +1360,14 @@ public class AppsCustomizePagedView extends PagedViewWithDraggableItems implemen
 
     @Override
     public void reset() {
-        updateCurrentTab(0);
-        invalidatePageData(0);
+        AppsCustomizeTabHost tabHost = getTabHost();
+        String tag = tabHost.getCurrentTabTag();
+        if (!tag.equals(tabHost.getTabTagForContentType(ContentType.Applications))) {
+            tabHost.setCurrentTabFromContent(ContentType.Applications);
+        }
+        if (mCurrentPage != 0) {
+            invalidatePageData(0);
+        }
     }
 
     private AppsCustomizeTabHost getTabHost() {