Fix Android lint error.

webrtc/examples/androidapp/src/org/appspot/apprtc/CaptureQualityController.java

 /*
  *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 package org.appspot.apprtc;
 
 import android.widget.SeekBar;
 import android.widget.TextView;
-
-import org.webrtc.CameraEnumerationAndroid.CaptureFormat;
-
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
+import org.webrtc.CameraEnumerationAndroid.CaptureFormat;
 
 /**
  * Control capture format based on a seekbar listener.
  */
 public class CaptureQualityController implements SeekBar.OnSeekBarChangeListener {
   private final List<CaptureFormat> formats =
       Arrays.asList(new CaptureFormat(1280, 720, 0, 30000), new CaptureFormat(960, 540, 0, 30000),
           new CaptureFormat(640, 480, 0, 30000), new CaptureFormat(480, 360, 0, 30000),
           new CaptureFormat(320, 240, 0, 30000), new CaptureFormat(256, 144, 0, 30000));
   // Prioritize framerate below this threshold and resolution above the threshold.
@@ skipping 51 matching lines @@
     final double kExpConstant = 3.0;
     bandwidthFraction =
         (Math.exp(kExpConstant * bandwidthFraction) - 1) / (Math.exp(kExpConstant) - 1);
     targetBandwidth = bandwidthFraction * maxCaptureBandwidth;
 
     // Choose the best format given a target bandwidth.
     final CaptureFormat bestFormat = Collections.max(formats, compareFormats);
     width = bestFormat.width;
     height = bestFormat.height;
     framerate = calculateFramerate(targetBandwidth, bestFormat);
-    captureFormatText.setText(width + "x" + height + " @ " + framerate + "fps");
+    captureFormatText.setText(
+        String.format(captureFormatText.getContext().getString(R.string.format_description), width,
+            height, framerate));
   }
 
   @Override
   public void onStartTrackingTouch(SeekBar seekBar) {}
 
   @Override
   public void onStopTrackingTouch(SeekBar seekBar) {
     callEvents.onCaptureFormatChange(width, height, framerate);
   }
 
   // Return the highest frame rate possible based on bandwidth and format.
   private int calculateFramerate(double bandwidth, CaptureFormat format) {
     return (int) Math.round(
         Math.min(format.framerate.max, (int) Math.round(bandwidth / (format.width * format.height)))
         / 1000.0);
   }
 }