[Downloads] Add a horizontal material-styled ProgressBar

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

Index: chrome/android/java/src/org/chromium/chrome/browser/widget/SlowedProgressBar.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/widget/SlowedProgressBar.java b/chrome/android/java/src/org/chromium/chrome/browser/widget/SlowedProgressBar.java
deleted file mode 100644
index 7767e9c76182cf00b5d661de8324a7b3542256d3..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/widget/SlowedProgressBar.java
+++ /dev/null
@@ -1,109 +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.graphics.Canvas;
-import android.util.AttributeSet;
-import android.widget.ProgressBar;
-
-import org.chromium.base.annotations.SuppressFBWarnings;
-
-/**
- * A throttled version of {@link ProgressBar}.  This steals calls to
- * {@link android.view.View#postInvalidateOnAnimation} and delays them if necessary to reach a
- * specific FPS.
- */
-public class SlowedProgressBar extends ProgressBar {
-    private long mLastDrawTimeMs;
-    private boolean mPendingInvalidation;
-    private static final int MIN_MS_PER_FRAME = 66;
-    private int mTargetProgress;
-
-    private final Runnable mInvalidationRunnable = new Runnable() {
-        @Override
-        public void run() {
-            mPendingInvalidation = false;
-            invalidate();
-        }
-    };
-
-    private final Runnable mUpdateProgressRunnable = new Runnable() {
-        @Override
-        public void run() {
-            setProgressInternal(mTargetProgress);
-        }
-    };
-
-    /**
-     * Create a new progress bar with range 0...100 and initial progress of 0.
-     * @param context the application environment.
-     */
-    public SlowedProgressBar(Context context) {
-        super(context, null);
-    }
-
-    /**
-     * Create a new progress bar with range 0...100 and initial progress of 0.
-     * @param context the application environment.
-     * @param attrs the xml attributes that should be used to initialize this view.
-     */
-    public SlowedProgressBar(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    /**
-     * Create a new progress bar with range 0...100 and initial progress of 0.
-     * @param context the application environment.
-     * @param attrs the xml attributes that should be used to initialize this view.
-     * @param defStyle the default style to apply to this view.
-     */
-    public SlowedProgressBar(Context context, AttributeSet attrs, int defStyle) {
-        super(context, attrs, defStyle);
-    }
-
-    /**
-     * Keep track of the last time we drew.
-     */
-    @Override
-    public void onDraw(Canvas canvas) {
-        mLastDrawTimeMs = System.currentTimeMillis();
-        super.onDraw(canvas);
-    }
-
-    /**
-     * Delay invalidations to be no more than 1 per MIN_MS_PER_FRAME;
-     * never allow more than one invalidation outstanding.
-     */
-    @Override
-    public void postInvalidateOnAnimation() {
-        if (mPendingInvalidation) return;
-        long nextDrawTime = mLastDrawTimeMs + MIN_MS_PER_FRAME;
-        long delay = Math.max(0, nextDrawTime - System.currentTimeMillis());
-        mPendingInvalidation = true;
-        postOnAnimationDelayed(mInvalidationRunnable, delay);
-    }
-
-    /**
-     * Ensure invalidations always occurs in the scope of animation.
-     * @param progress The progress value to set the visuals to.
-     */
-    @SuppressFBWarnings("CHROMIUM_SYNCHRONIZED_METHOD")
-    @Override
-    public synchronized void setProgress(int progress) {
-        if (mTargetProgress == progress) return;
-        mTargetProgress = progress;
-        removeCallbacks(mUpdateProgressRunnable);
-        postOnAnimation(mUpdateProgressRunnable);
-    }
-
-    /**
-     * Called to update the progress visuals.
-     * @param progress The progress value to set the visuals to.
-     */
-    protected void setProgressInternal(int progress) {
-        super.setProgress(progress);
-    }
-}