Refactor the view hierarchy of snackbars and infobars

chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolderBehavior.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolderBehavior.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolderBehavior.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolderBehavior.java
deleted file mode 100644
index dd7fcc7bfa11c477c91187aa3782121573873f7a..0000000000000000000000000000000000000000
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/CompositorViewHolderBehavior.java
+++ /dev/null
@@ -1,62 +0,0 @@
-// 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;
-
-import android.content.Context;
-import android.support.design.widget.CoordinatorLayout;
-import android.support.design.widget.CoordinatorLayout.Behavior;
-import android.util.AttributeSet;
-import android.view.MotionEvent;
-import android.view.View;
-
-/**
- * Default {@link Behavior} for widgets that are children of {@link CompositorViewHolder} and want
- * to handle touch events.
- */
-public class CompositorViewHolderBehavior extends Behavior<View> {
-    private boolean mShouldIntercept;
-
-    /**
-     * Constructs the object programmatically.
-     */
-    public CompositorViewHolderBehavior() {
-        super();
-    }
-
-    /**
-     * Constructs the object during inflation.
-     */
-    public CompositorViewHolderBehavior(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    @Override
-    public boolean onInterceptTouchEvent(CoordinatorLayout parent, View child, MotionEvent ev) {
-        mShouldIntercept = child.getVisibility() == View.VISIBLE && isTouchInBound(ev, child);
-        return mShouldIntercept;
-    }
-
-    @Override
-    public boolean onTouchEvent(CoordinatorLayout parent, View child, MotionEvent ev) {
-        // If an ACTION_MOVE is dispatched to a ListView or a ScrollView and the ViewGroup
-        // intercepts it, the framework will generate an ACTION_CANCEL to the ViewGroup's children.
-        // This class, however, will steal this cancel event and send to the ViewGroup again,
-        // causing scroll to fail. Thus we should specifically not catch ACTION_CANCEL in behavior.
-        // In theory, stopping ACTION_CANCEL will cause problem when CompositorViewHolder scrolls.
-        // Yet currently CompositorViewHolder does not scroll.
-        if (!mShouldIntercept || ev.getActionMasked() == MotionEvent.ACTION_CANCEL) return false;
-        ev.offsetLocation(-child.getX(), -child.getY());
-        child.dispatchTouchEvent(ev);
-        return true;
-    }
-
-    /**
-     * @return Whether the {@link MotionEvent} happens within the bound of the given {@link View}.
-     */
-    private static boolean isTouchInBound(MotionEvent ev, View view) {
-        return ev.getX() >= view.getX() && ev.getX() - view.getX() <= view.getWidth()
-                && ev.getY() >= view.getY() && ev.getY() - view.getY() <= view.getHeight();
-    }
-}