[Checkstyle] Fix misc style issues in Java files.

media/base/android/java/src/org/chromium/media/MediaDrmBridge.java

Index: media/base/android/java/src/org/chromium/media/MediaDrmBridge.java
diff --git a/media/base/android/java/src/org/chromium/media/MediaDrmBridge.java b/media/base/android/java/src/org/chromium/media/MediaDrmBridge.java
index 7db355b082b3a8ff347fb39487039130c026b21a..bec901bf6af43523e8718845d8a8e5a5be89472b 100644
--- a/media/base/android/java/src/org/chromium/media/MediaDrmBridge.java
+++ b/media/base/android/java/src/org/chromium/media/MediaDrmBridge.java
@@ -775,12 +775,12 @@ public class MediaDrmBridge {
     private class MediaDrmListener implements MediaDrm.OnEventListener {
         @Override
         public void onEvent(
-                MediaDrm mediaDrm, byte[] session_array, int event, int extra, byte[] data) {
-            if (session_array == null) {
+                MediaDrm mediaDrm, byte[] sessionArray, int event, int extra, byte[] data) {
+            if (sessionArray == null) {
                 Log.e(TAG, "MediaDrmListener: Null session.");
                 return;
             }
-            ByteBuffer session = ByteBuffer.wrap(session_array);
+            ByteBuffer session = ByteBuffer.wrap(sessionArray);
             if (!sessionExists(session)) {
                 Log.e(TAG, "MediaDrmListener: Invalid session.");
                 return;