Suppress deprecation warning in CastShellActivity.

chromecast/browser/android/apk/src/org/chromium/chromecast/shell/CastShellActivity.java

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chromecast.shell;
 
 import android.app.Activity;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ skipping 153 matching lines @@
         if (DEBUG) Log.d(TAG, "onStop, window focus = %d", hasWindowFocus());
 
         if (isStopping()) {
             // As soon as the cast app is no longer in the foreground, we ought to immediately tear
             // everything down.
             finishGracefully();
 
             // On pre-M devices, the device should be "unmuted" at the end of a Cast application
             // session, signaled by the activity exiting. See b/19964892.
             if (Build.VERSION.SDK_INT < 23) {
-                AudioManager audioManager = CastAudioManager.getAudioManager(this);
-                boolean isMuted = false;
-                try {
-                    isMuted = (Boolean) audioManager.getClass().getMethod("isStreamMute", int.class)
-                            .invoke(audioManager, AudioManager.STREAM_MUSIC);
-                } catch (Exception e) {
-                    Log.e(TAG, "Cannot call AudioManager.isStreamMute().", e);
-                }
-
-                if (isMuted) {
-                    // Note: this is a no-op on fixed-volume devices.
-                    audioManager.setStreamMute(AudioManager.STREAM_MUSIC, false);
-                }
+                releaseStreamMuteIfNecessary();
             }
         }
 
         super.onStop();
     }
 
     @Override
     protected void onResume() {
         if (DEBUG) Log.d(TAG, "onResume");
         super.onResume();
@@ skipping 32 matching lines @@
         mReceivedUserLeave = true;
     }
 
     protected void finishGracefully() {
         if (mNativeCastWindow != 0) {
             mCastWindowManager.stopCastWindow(mNativeCastWindow, true /* gracefully */);
             mNativeCastWindow = 0;
         }
     }
 
+    @SuppressWarnings("deprecation")
+    private void releaseStreamMuteIfNecessary() {
+        AudioManager audioManager = CastAudioManager.getAudioManager(this);
+        boolean isMuted = false;
+        try {
+            isMuted = (Boolean) audioManager.getClass().getMethod("isStreamMute", int.class)
+                    .invoke(audioManager, AudioManager.STREAM_MUSIC);
+        } catch (Exception e) {
+            Log.e(TAG, "Cannot call AudioManager.isStreamMute().", e);
+        }
+
+        if (isMuted) {
+            // Note: this is a no-op on fixed-volume devices.
+            audioManager.setStreamMute(AudioManager.STREAM_MUSIC, false);
+        }
+    }
+
     private void registerBroadcastReceiver() {
         if (mBroadcastReceiver == null) {
             mBroadcastReceiver = new BroadcastReceiver() {
                 @Override
                 public void onReceive(Context context, Intent intent) {
                     Log.d(TAG, "Received intent: action=%s", intent.getAction());
                     if (CastWindowAndroid.ACTION_ENABLE_DEV_TOOLS.equals(intent.getAction())) {
                         mCastWindowManager.nativeEnableDevTools(true);
                     } else if (CastWindowAndroid.ACTION_DISABLE_DEV_TOOLS.equals(
                             intent.getAction())) {
@@ skipping 75 matching lines @@
     @Override
     public boolean dispatchTouchEvent(MotionEvent ev) {
         return false;
     }
 
     @Override
     public boolean dispatchTrackballEvent(MotionEvent ev) {
         return false;
     }
 }