Remove redundant initializers from WebRTC Java code.

Removes redundant field initializers such as null, 0 and false.

Bug: webrtc:9742
Change-Id: I1e54f6c6000885cf95f7af8e2701875a78445497
Reviewed-on: https://webrtc-review.googlesource.com/99481
Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Commit-Queue: Sami Kalliomäki <sakal@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24676}

examples/androidapp/src/org/appspot/apprtc/AppRTCAudioManager.java

@@ -65,9 +65,9 @@ public class AppRTCAudioManager {
   private AudioManagerEvents audioManagerEvents;
   private AudioManagerState amState;
   private int savedAudioMode = AudioManager.MODE_INVALID;
-  private boolean savedIsSpeakerPhoneOn = false;
-  private boolean savedIsMicrophoneMute = false;
-  private boolean hasWiredHeadset = false;
+  private boolean savedIsSpeakerPhoneOn;
+  private boolean savedIsMicrophoneMute;
+  private boolean hasWiredHeadset;
 
   // Default audio device; speaker phone for video calls or earpiece for audio
   // only calls.
@@ -93,8 +93,7 @@ public class AppRTCAudioManager {
   // relative to the view screen of a device and can therefore be used to
   // assist device switching (close to ear <=> use headset earpiece if
   // available, far from ear <=> use speaker phone).
-  @Nullable
-  private AppRTCProximitySensor proximitySensor = null;
+  @Nullable private AppRTCProximitySensor proximitySensor;
 
   // Handles all tasks related to Bluetooth headset devices.
   private final AppRTCBluetoothManager bluetoothManager;

examples/androidapp/src/org/appspot/apprtc/AppRTCProximitySensor.java

@@ -16,8 +16,8 @@ import android.hardware.SensorEvent;
 import android.hardware.SensorEventListener;
 import android.hardware.SensorManager;
 import android.os.Build;
-import javax.annotation.Nullable;
 import android.util.Log;
+import javax.annotation.Nullable;
 import org.appspot.apprtc.util.AppRTCUtils;
 import org.webrtc.ThreadUtils;
 
@@ -40,9 +40,8 @@ public class AppRTCProximitySensor implements SensorEventListener {
 
   private final Runnable onSensorStateListener;
   private final SensorManager sensorManager;
-  @Nullable
-  private Sensor proximitySensor = null;
-  private boolean lastStateReportIsNear = false;
+  @Nullable private Sensor proximitySensor;
+  private boolean lastStateReportIsNear;
 
   /** Construction */
   static AppRTCProximitySensor create(Context context, Runnable sensorStateListener) {

examples/androidapp/src/org/appspot/apprtc/CallActivity.java

@@ -152,14 +152,12 @@ public class CallActivity extends Activity implements AppRTCClient.SignalingEven
 
   private final ProxyVideoSink remoteProxyRenderer = new ProxyVideoSink();
   private final ProxyVideoSink localProxyVideoSink = new ProxyVideoSink();
-  @Nullable
-  private PeerConnectionClient peerConnectionClient = null;
+  @Nullable private PeerConnectionClient peerConnectionClient;
   @Nullable
   private AppRTCClient appRtcClient;
   @Nullable
   private SignalingParameters signalingParameters;
-  @Nullable
-  private AppRTCAudioManager audioManager = null;
+  @Nullable private AppRTCAudioManager audioManager;
   @Nullable
   private SurfaceViewRenderer pipRenderer;
   @Nullable
@@ -176,9 +174,9 @@ public class CallActivity extends Activity implements AppRTCClient.SignalingEven
   private boolean iceConnected;
   private boolean isError;
   private boolean callControlFragmentVisible = true;
-  private long callStartedTimeMs = 0;
+  private long callStartedTimeMs;
   private boolean micEnabled = true;
-  private boolean screencaptureEnabled = false;
+  private boolean screencaptureEnabled;
   private static Intent mediaProjectionPermissionResultData;
   private static int mediaProjectionPermissionResultCode;
   // True if local view is in the fullscreen renderer.

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

@@ -30,10 +30,10 @@ public class CaptureQualityController implements SeekBar.OnSeekBarChangeListener
   private static final int FRAMERATE_THRESHOLD = 15;
   private TextView captureFormatText;
   private CallFragment.OnCallEvents callEvents;
-  private int width = 0;
-  private int height = 0;
-  private int framerate = 0;
-  private double targetBandwidth = 0;
+  private int width;
+  private int height;
+  private int framerate;
+  private double targetBandwidth;
 
   public CaptureQualityController(
       TextView captureFormatText, CallFragment.OnCallEvents callEvents) {

examples/androidapp/src/org/appspot/apprtc/ConnectActivity.java

@@ -45,7 +45,7 @@ public class ConnectActivity extends Activity {
   private static final String TAG = "ConnectActivity";
   private static final int CONNECTION_REQUEST = 1;
   private static final int REMOVE_FAVORITE_INDEX = 0;
-  private static boolean commandLineRun = false;
+  private static boolean commandLineRun;
 
   private ImageButton addFavoriteButton;
   private EditText roomEditText;

examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java

@@ -182,8 +182,7 @@ public class PeerConnectionClient {
   private RtcEventLog rtcEventLog;
   // Implements the WebRtcAudioRecordSamplesReadyCallback interface and writes
   // recorded audio samples to an output file.
-  @Nullable
-  private RecordedAudioToFileController saveRecordedAudioToFile = null;
+  @Nullable private RecordedAudioToFileController saveRecordedAudioToFile;
 
   /**
    * Peer connection parameters.

examples/androidapp/src/org/appspot/apprtc/RecordedAudioToFileController.java

@@ -12,14 +12,14 @@ package org.appspot.apprtc;
 
 import android.media.AudioFormat;
 import android.os.Environment;
-import javax.annotation.Nullable;
 import android.util.Log;
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.util.concurrent.ExecutorService;
+import javax.annotation.Nullable;
 import org.webrtc.audio.JavaAudioDeviceModule;
 import org.webrtc.audio.JavaAudioDeviceModule.SamplesReadyCallback;
 import org.webrtc.voiceengine.WebRtcAudioRecord;
@@ -36,10 +36,9 @@ public class RecordedAudioToFileController
 
   private final Object lock = new Object();
   private final ExecutorService executor;
-  @Nullable
-  private OutputStream rawAudioFileOutputStream = null;
+  @Nullable private OutputStream rawAudioFileOutputStream;
   private boolean isRunning;
-  private long fileSizeInBytes = 0;
+  private long fileSizeInBytes;
 
   public RecordedAudioToFileController(ExecutorService executor) {
     Log.d(TAG, "ctor");