Clean up tinted ImageView subclasses

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

 // Copyright 2014 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.content.res.ColorStateList;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
@@ skipping 51 matching lines @@
     /**
      * Factory method for creating a {@link TintedDrawable} with a resource id and specific tint.
      */
     public static TintedDrawable constructTintedDrawable(
             Resources res, int drawableId, int tintColorId) {
         TintedDrawable drawable = constructTintedDrawable(res,  drawableId);
         drawable.setTint(ApiCompatibilityUtils.getColorStateList(res, tintColorId));
         return drawable;
     }
 
-    /**
-     * Factory method for creating a {@link TintedDrawable} with a {@link Bitmap} icon.
-     */
-    public static TintedDrawable constructTintedDrawable(Resources res, Bitmap icon) {
-        return new TintedDrawable(res, icon);
-    }
-
     private boolean updateTintColor() {
         if (mTint == null) return false;
         setColorFilter(mTint.getColorForState(getState(), 0), PorterDuff.Mode.SRC_IN);
         return true;
     }
 }