[InfoBar] Upstram basic infobar flow for Android.

chrome/android/java/res/drawable/infobar_button_normal_floating.xml

Index: chrome/android/java/res/drawable/infobar_button_normal_floating.xml
diff --git a/ui/android/java/res/drawable/autofill_popup_background.xml b/chrome/android/java/res/drawable/infobar_button_normal_floating.xml
similarity index 51%
copy from ui/android/java/res/drawable/autofill_popup_background.xml
copy to chrome/android/java/res/drawable/infobar_button_normal_floating.xml
index 0f8d38babdf320de088cf831d701b0795d29f756..4853014d3057013bf32949c19d4e88240beedacb 100644
--- a/ui/android/java/res/drawable/autofill_popup_background.xml
+++ b/chrome/android/java/res/drawable/infobar_button_normal_floating.xml
@@ -1,13 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!-- Copyright 2013 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.
 -->
 
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:state_above_anchor="true"
-        android:drawable="@drawable/autofill_popup_background_up" />
-    <item android:drawable="@drawable/autofill_popup_background_down" />
-</selector>
+    <item
+        android:state_pressed="false"
+        android:state_focused="false"
+        android:drawable="@drawable/infobar_button_normal_floating_enabled" />
+    <item
+        android:drawable="@drawable/infobar_button_normal_floating_pressed" />
+</selector>