Fix various errorprone warnings and errors.

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

Index: remoting/android/java/src/org/chromium/chromoting/CardboardDesktopRenderer.java
diff --git a/remoting/android/java/src/org/chromium/chromoting/CardboardDesktopRenderer.java b/remoting/android/java/src/org/chromium/chromoting/CardboardDesktopRenderer.java
index fe9a30cf64f3160a04cc123293931795a034d9a4..be1817c6e09073c1a98cdd562f58e6ee7c1957c0 100644
--- a/remoting/android/java/src/org/chromium/chromoting/CardboardDesktopRenderer.java
+++ b/remoting/android/java/src/org/chromium/chromoting/CardboardDesktopRenderer.java
@@ -183,7 +183,7 @@ public class CardboardDesktopRenderer implements CardboardView.StereoRenderer {
     private float mCameraPosition;
 
     // Lock to allow multithreaded access to mCameraPosition.
-    private Object mCameraPositionLock = new Object();
+    private final Object mCameraPositionLock = new Object();

[mikecase (-- gone --), 2015/08/19 23:15:08]

fyi, for lambroslambrou@chromium.org. I synced and rebased this CL and a few
additional errorprone errors popped up. Same changes as before, just made
mLoadSkyboxImagesTextureLock and mCameraPositionLock final.

[Lambros, 2015/08/19 23:42:02]

Sorry for the noise - we're actively working on this code. We'll try to avoid
non-final locks from now on :)

 
     private float[] mCameraMatrix;
     private float[] mViewMatrix;
@@ -228,11 +228,11 @@ public class CardboardDesktopRenderer implements CardboardView.StereoRenderer {
     private boolean mReloadTexture;
 
     /** Lock to allow multithreaded access to mReloadTexture. */
-    private Object mReloadTextureLock = new Object();
+    private final Object mReloadTextureLock = new Object();
 
     // Lock for eye position related operations.
     // This protects access to mEyePositionVector as well as mDesktop{Height/Width}Pixels.
-    private Object mEyePositionLock = new Object();
+    private final Object mEyePositionLock = new Object();
 
     private int mDesktopHeightPixels;
     private int mDesktopWidthPixels;
@@ -244,7 +244,7 @@ public class CardboardDesktopRenderer implements CardboardView.StereoRenderer {
     private boolean mLoadSkyboxImagesTexture;
 
     // Lock to allow multithreaded access to mLoadSkyboxImagesTexture.
-    private Object mLoadSkyboxImagesTextureLock = new Object();
+    private final Object mLoadSkyboxImagesTextureLock = new Object();
 
     private ChromotingDownloadManager mDownloadManager;