Remove redundant field initialization in Java code.

base/android/java/src/org/chromium/base/SystemMessageHandler.java

Index: base/android/java/src/org/chromium/base/SystemMessageHandler.java
diff --git a/base/android/java/src/org/chromium/base/SystemMessageHandler.java b/base/android/java/src/org/chromium/base/SystemMessageHandler.java
index abfa2d8abe3a74948b5411f0dd7599d52187e6ee..6a79c5dea537b566e3e57a4e3fb9833b764e5506 100644
--- a/base/android/java/src/org/chromium/base/SystemMessageHandler.java
+++ b/base/android/java/src/org/chromium/base/SystemMessageHandler.java
@@ -24,9 +24,9 @@ class SystemMessageHandler extends Handler {
     private static final int DELAYED_SCHEDULED_WORK = 2;
 
     // Native class pointer set by the constructor of the SharedClient native class.
-    private long mMessagePumpDelegateNative = 0;
-    private long mMessagePumpNative = 0;
-    private long mDelayedScheduledTimeTicks = 0;
+    private long mMessagePumpDelegateNative;
+    private long mMessagePumpNative;
+    private long mDelayedScheduledTimeTicks;
 
     protected SystemMessageHandler(long messagePumpDelegateNative, long messagePumpNative) {
         mMessagePumpDelegateNative = messagePumpDelegateNative;