Adding render stats APIs to UiAutomation (framework).

bug:12927198

Change-Id: Iae21481c75ae58dcdab3731bf5f1e2844e29d434
diff --git a/tools/layoutlib/bridge/src/android/view/IWindowManagerImpl.java b/tools/layoutlib/bridge/src/android/view/IWindowManagerImpl.java
index 743a26c..1f2342a 100644
--- a/tools/layoutlib/bridge/src/android/view/IWindowManagerImpl.java
+++ b/tools/layoutlib/bridge/src/android/view/IWindowManagerImpl.java
@@ -23,22 +23,11 @@
 import android.content.res.CompatibilityInfo;
 import android.content.res.Configuration;
 import android.graphics.Bitmap;
-import android.graphics.Rect;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.IRemoteCallback;
 import android.os.RemoteException;
 import android.util.DisplayMetrics;
-import android.view.Display;
-import android.view.Gravity;
-import android.view.IApplicationToken;
-import android.view.IInputFilter;
-import android.view.IOnKeyguardExitResult;
-import android.view.IRotationWatcher;
-import android.view.IWindowManager;
-import android.view.IWindowSession;
-
-import java.util.List;
 
 /**
  * Basic implementation of {@link IWindowManager} so that {@link Display} (and
@@ -462,4 +451,16 @@
         // TODO Auto-generated method stub
         return false;
     }
+
+    @Override
+    public boolean clearWindowContentRenderStats(IBinder token) {
+        // TODO Auto-generated method stub
+        return false;
+    }
+
+    @Override
+    public WindowContentFrameStats getWindowContentRenderStats(IBinder token) {
+        // TODO Auto-generated method stub
+        return null;
+    }
 }