Adding PipManager dumps.

Test: adb shell dumpsys activity service com.android.systemui
Change-Id: Id647833f1b4dcb6226517c058d17d1812f022671
diff --git a/packages/SystemUI/src/com/android/systemui/pip/phone/PipManager.java b/packages/SystemUI/src/com/android/systemui/pip/phone/PipManager.java
index f59b2a4..42f1b14 100644
--- a/packages/SystemUI/src/com/android/systemui/pip/phone/PipManager.java
+++ b/packages/SystemUI/src/com/android/systemui/pip/phone/PipManager.java
@@ -32,13 +32,16 @@
 import android.view.IWindowManager;
 import android.view.WindowManagerGlobal;
 
+import com.android.systemui.pip.BasePipManager;
 import com.android.systemui.recents.misc.SystemServicesProxy;
 import com.android.systemui.recents.misc.SystemServicesProxy.TaskStackListener;
 
+import java.io.PrintWriter;
+
 /**
  * Manages the picture-in-picture (PIP) UI and states for Phones.
  */
-public class PipManager {
+public class PipManager implements BasePipManager {
     private static final String TAG = "PipManager";
 
     private static PipManager sPipController;
@@ -179,4 +182,11 @@
         }
         return sPipController;
     }
+
+    public void dump(PrintWriter pw) {
+        final String innerPrefix = "  ";
+        pw.println(TAG);
+        mMenuController.dump(pw, innerPrefix);
+        mTouchHandler.dump(pw, innerPrefix);
+    }
 }