Remove redundant field initialization in Java code.

media/capture/video/android/java/src/org/chromium/media/VideoCaptureCamera.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.media;
 
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.graphics.ImageFormat;
 import android.graphics.Rect;
@@ skipping 67 matching lines @@
             }
             return ImageFormat.YV12;
         }
     }
 
     private int mExpectedFrameSize;
     private final Object mPhotoTakenCallbackLock = new Object();
 
     // Storage of takePicture() callback Id. There can be one such request in flight at most, and
     // needs to be exercised either in case of error or sucess.
-    private long mPhotoTakenCallbackId = 0;
-    private int mPhotoWidth = 0;
-    private int mPhotoHeight = 0;
+    private long mPhotoTakenCallbackId;
+    private int mPhotoWidth;
+    private int mPhotoHeight;
     private android.hardware.Camera.Area mAreaOfInterest;
 
     private android.hardware.Camera mCamera;
     // Lock to mutually exclude execution of OnPreviewFrame() and {start/stop}Capture().
     private ReentrantLock mPreviewBufferLock = new ReentrantLock();
     // True when native code has started capture.
-    private boolean mIsRunning = false;
+    private boolean mIsRunning;
 
-    private int[] mGlTextures = null;
-    private SurfaceTexture mSurfaceTexture = null;
+    private int[] mGlTextures;
+    private SurfaceTexture mSurfaceTexture;
 
     private static android.hardware.Camera.CameraInfo getCameraInfo(int id) {
         android.hardware.Camera.CameraInfo cameraInfo = new android.hardware.Camera.CameraInfo();
         try {
             android.hardware.Camera.getCameraInfo(id, cameraInfo);
         } catch (RuntimeException ex) {
             Log.e(TAG, "getCameraInfo: Camera.getCameraInfo: " + ex);
             return null;
         }
         return cameraInfo;
@@ skipping 683 matching lines @@
                         getCameraRotation());
             }
         } finally {
             mPreviewBufferLock.unlock();
             if (camera != null) {
                 camera.addCallbackBuffer(data);
             }
         }
     }
 }