Memory tracking is now handled by a service.

Multiple processes may be tracked and viewed simultaneously.

Also, some changes to the graph:
  * show uss and pss together
  * adjust opacity controls

Change-Id: I20eebaa8cc8faf78b46af2a35d71ee538207f02b
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 0253103..be01682 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -1043,10 +1043,12 @@
 
         if (getResources().getBoolean(R.bool.debug_memory_enabled)) {
             Log.v(TAG, "adding WeightWatcher");
-            ((FrameLayout) mLauncherView).addView(new WeightWatcher(this),
+            final View ww = new WeightWatcher(this);
+            ww.setAlpha(0.5f);
+            ((FrameLayout) mLauncherView).addView(ww,
                     new FrameLayout.LayoutParams(
                             FrameLayout.LayoutParams.MATCH_PARENT,
-                            44,
+                            FrameLayout.LayoutParams.WRAP_CONTENT,
                             Gravity.BOTTOM)
             );
         }