Fixing some comments

Change-Id: I9e6eaaf9ee145e2f37dfb97a3259509a72cd73af
diff --git a/src/com/android/launcher3/PinchAnimationManager.java b/src/com/android/launcher3/PinchAnimationManager.java
index 3807945..baeb77c 100644
--- a/src/com/android/launcher3/PinchAnimationManager.java
+++ b/src/com/android/launcher3/PinchAnimationManager.java
@@ -149,11 +149,11 @@
             if (startState == OVERVIEW) {
                 animateOverviewPanelButtons(goingTowards == OVERVIEW);
             } else if (startState == NORMAL) {
-                animateHotseatAndPageIndicator(goingTowards == NORMAL);
+                animateHotseatAndQsb(goingTowards == NORMAL);
             }
         } else if (threshold == PinchThresholdManager.THRESHOLD_TWO) {
             if (startState == OVERVIEW) {
-                animateHotseatAndPageIndicator(goingTowards == NORMAL);
+                animateHotseatAndQsb(goingTowards == NORMAL);
                 animateScrim(goingTowards == OVERVIEW);
             } else if (startState == NORMAL) {
                 animateOverviewPanelButtons(goingTowards == OVERVIEW);
@@ -188,7 +188,7 @@
         }
     }
 
-    private void animateHotseatAndPageIndicator(boolean show) {
+    private void animateHotseatAndQsb(boolean show) {
         startAnimator(INDEX_HOTSEAT,
                 mWorkspace.createHotseatAlphaAnimator(show ? 1 : 0), THRESHOLD_ANIM_DURATION);
         startAnimator(INDEX_QSB, mWorkspace.mQsbAlphaController.animateAlphaAtIndex(
diff --git a/src/com/android/launcher3/util/MultiStateAlphaController.java b/src/com/android/launcher3/util/MultiStateAlphaController.java
index df73bfd..2a49361 100644
--- a/src/com/android/launcher3/util/MultiStateAlphaController.java
+++ b/src/com/android/launcher3/util/MultiStateAlphaController.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008 The Android Open Source Project
+ * Copyright (C) 2016 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -53,6 +53,10 @@
                 : (mAm.isEnabled() ? View.GONE : View.INVISIBLE));
     }
 
+    /**
+     * Returns an animator which changes the alpha at the index {@param index}
+     * to {@param finalAlpha}. Alphas at other index are not affected.
+     */
     public Animator animateAlphaAtIndex(float finalAlpha, final int index) {
         if (Float.compare(finalAlpha, mAlphas[index]) == 0) {
             // Return a dummy animator to avoid null checks.