Revert of [Andorid] ClipDrawable progress bar experiment.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/widget/ClipDrawableProgressBar.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/widget/ClipDrawableProgressBar.java b/chrome/android/java/src/org/chromium/chrome/browser/widget/ClipDrawableProgressBar.java
deleted file mode 100644
index 234183258f01ce845923bf2a9d74959cba422492..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/widget/ClipDrawableProgressBar.java
+++ /dev/null
@@ -1,50 +0,0 @@
-// Copyright 2015 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.Context;
-import android.util.AttributeSet;
-import android.widget.ImageView;
-
-/**
- * An alternative progress bar implemented using ClipDrawable. We're experimenting with this for
- * faster performance. http://crbug.com/455891
- */
-public class ClipDrawableProgressBar extends ImageView {
-    private static final long PROGRESS_CLEARING_DELAY_MS = 200;
-
-    private final Runnable mClearLoadProgressRunnable = new Runnable() {
-        @Override
-        public void run() {
-            setProgress(0);
-        }
-    };
-
-    /**
-     * Constructor for inflating from XML.
-     */
-    public ClipDrawableProgressBar(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    /**
-     * Set the current progress to the specified value.
-     * @param progress The new progress, between 0 and 10000.
-     */
-    public void setProgress(int progress) {
-        getDrawable().setLevel(progress);
-
-        removeCallbacks(mClearLoadProgressRunnable);
-        if (progress == 10000) postDelayed(mClearLoadProgressRunnable, PROGRESS_CLEARING_DELAY_MS);
-    }
-
-    /**
-     * Get the progress bar's current level of progress.
-     * @return The current progress, between 0 and getMax().
-     */
-    public int getProgress() {
-        return getDrawable().getLevel();
-    }
-}