Max-width, floating infobars.

chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarWrapper.java

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarWrapper.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarWrapper.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarWrapper.java
new file mode 100644
index 0000000000000000000000000000000000000000..2ed608c73798498c77b33aedcd39829546d6128b
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarWrapper.java
@@ -0,0 +1,40 @@
+// 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.infobar;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.view.Gravity;
+import android.view.View;
+import android.widget.FrameLayout;
+
+import org.chromium.chrome.R;
+
+/**
+ * Layout that holds an infobar's contents and provides a background color and a top shadow.
+ */
+class InfoBarWrapper extends FrameLayout {
+
+    /**
+     * Constructor for inflating from Java.
+     */
+    InfoBarWrapper(Context context) {
+        super(context);
+        Resources res = context.getResources();
+        int peekingHeight = res.getDimensionPixelSize(R.dimen.infobar_peeking_height);
+        int shadowHeight = res.getDimensionPixelSize(R.dimen.infobar_shadow_height);
+        setMinimumHeight(peekingHeight + shadowHeight);
+
+        // setBackgroundResource() changes the padding, so call setPadding() second.
+        setBackgroundResource(R.drawable.infobar_wrapper_bg);
+        setPadding(0, shadowHeight, 0, 0);
+    }
+
+    @Override
+    public void onViewAdded(View child) {
+        child.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT,
+                Gravity.TOP));
+    }
+}