Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/widget/ToolbarProgressBarAnimatingView.java

 // Copyright 2016 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.chrome.browser.widget;
 
 import android.animation.Animator;
 import android.animation.Animator.AnimatorListener;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
@@ skipping 41 matching lines @@
     /** The fraction of overall completion that the small animating bar should be expanded at. */
     private static final float SMALL_BAR_EXPANSION_COMPLETE = 0.6f;
 
     /** The maximum size of the animating view. */
     private static final float ANIMATING_VIEW_MAX_WIDTH_DP = 400;
 
     /** Interpolator for enter and exit animation. */
     private final BakedBezierInterpolator mBezier = BakedBezierInterpolator.FADE_OUT_CURVE;
 
     /** The current width of the progress bar. */
-    private float mProgressWidth = 0;
+    private float mProgressWidth;
 
     /** The set of individual animators that constitute the whole animation sequence. */
     private final AnimatorSet mAnimatorSet;
 
     /** The animator controlling the fast animation. */
     private final ValueAnimator mFastAnimation;
 
     /** The animator controlling the slow animation. */
     private final ValueAnimator mSlowAnimation;
 
@@ skipping 198 matching lines @@
         updateAnimation(mLastUpdatedAnimation, mLastAnimatedFraction);
     }
 
     /**
      * @param color The Android color that the animating bar should be.
      */
     public void setColor(int color) {
         mAnimationDrawable.setColor(color);
     }
 }