Remove redundant field initialization in Java code.

chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/contextualsearch/ContextualSearchImageControl.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.compositor.bottombar.contextualsearch;
 
 import android.content.Context;
 import android.support.v4.view.animation.PathInterpolatorCompat;
 import android.text.TextUtils;
 import android.view.animation.Interpolator;
 
@@ skipping 164 matching lines @@
 
     /**
      * The height and width of the static image.
      */
     private int mStaticImageSize;
 
     /**
      * The static image visibility percentage, which dictates how and where to draw the static
      * image. The static image is not visible at all at 0.f and completely visible at 1.f.
      */
-    private float mStaticImageVisibilityPercentage = 0.f;
+    private float mStaticImageVisibilityPercentage;
 
     /**
      * Hides the static image if it is visible and makes the icon sprite visible. Also resets the
      * thumbnail URL and quick action icon resource id.
      * @param animate Whether hiding the thumbnail should be animated.
      */
     public void hideStaticImage(boolean animate) {
         getIconSpriteControl().setIsVisible(true);
         if ((mThumbnailVisible || mQuickActionIconVisible) && animate) {
             animateStaticImageVisibility(false);
@@ skipping 74 matching lines @@
     public void onPropertyAnimationFinished(AnimationType prop) {
         if (prop == AnimationType.STATIC_IMAGE_VISIBILITY) {
             if (mStaticImageVisibilityPercentage == 0.f) {
                 onStaticImageHidden();
             } else if (mStaticImageVisibilityPercentage == 1.f) {
                 getIconSpriteControl().setIsVisible(false);
             }
         }
     }
 }