Merge \"Remove relayouts b/29945805\" into ub-launcher3-calgary

am: 7111a26813

Change-Id: I0156d8f0b69609dda7be16add216f08e8e5056f7

src/com/android/launcher3/Hotseat.java

@@ -220,11 +220,10 @@ public class Hotseat extends FrameLayout
     }
 
     public void setBackgroundTransparent(boolean enable) {
-        // This causes re-layout. Should replace the logic with simply setting the background alpha
         if (enable) {
-            setBackground(null);
+            mBackground.setAlpha(0);
         } else {
-            setBackground(mBackground);
+            mBackground.setAlpha(255);
         }
     }
 

src/com/android/launcher3/allapps/AllAppsTransitionController.java

@@ -444,5 +444,6 @@ public class AllAppsTransitionController implements TouchController, VerticalPul
         if (!mLauncher.isAllAppsVisible()) {
             setProgress(mShiftRange);
         }
+        mHotseat.removeOnLayoutChangeListener(this);
     }
 }