Fix various errorprone warnings and errors.

remoting/android/java/src/org/chromium/chromoting/DesktopView.java

Index: remoting/android/java/src/org/chromium/chromoting/DesktopView.java
diff --git a/remoting/android/java/src/org/chromium/chromoting/DesktopView.java b/remoting/android/java/src/org/chromium/chromoting/DesktopView.java
index 0b7dc1dfbb2496ba24f4fc4a6f2faec54f4893fb..5151559b0adcf5ef83509fd5827c58db46bf272f 100644
--- a/remoting/android/java/src/org/chromium/chromoting/DesktopView.java
+++ b/remoting/android/java/src/org/chromium/chromoting/DesktopView.java
@@ -34,7 +34,7 @@ import org.chromium.chromoting.jni.JniInterface;
 /** GUI element that holds the drawing canvas. */
 public class DesktopView extends SurfaceView implements DesktopViewInterface,
         SurfaceHolder.Callback {
-    private RenderData mRenderData;
+    private final RenderData mRenderData;
     private TouchInputHandler mInputHandler;
 
     /** The parent Desktop activity. */
@@ -61,7 +61,7 @@ public class DesktopView extends SurfaceView implements DesktopViewInterface,
         private boolean mRunning = false;
 
         /** Lock to allow multithreaded access to {@link #mStartTime} and {@link #mRunning}. */
-        private Object mLock = new Object();
+        private final Object mLock = new Object();
 
         private Paint mPaint = new Paint();
 
@@ -115,7 +115,7 @@ public class DesktopView extends SurfaceView implements DesktopViewInterface,
     // Variables to control animation by the TouchInputHandler.
 
     /** Protects mInputAnimationRunning. */
-    private Object mAnimationLock = new Object();
+    private final Object mAnimationLock = new Object();
 
     /** Whether the TouchInputHandler has requested animation to be performed. */
     private boolean mInputAnimationRunning = false;