Replace assets for avatar placeholder on Android

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

Index: chrome/android/java/res/drawable/logo_avatar_anonymous.xml
diff --git a/chrome/android/java/res/drawable/logo_avatar_anonymous.xml b/chrome/android/java/res/drawable/logo_avatar_anonymous.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a2ff9d3eaf63e483f87dbc3045aa18a7263eb0df
--- /dev/null
+++ b/chrome/android/java/res/drawable/logo_avatar_anonymous.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2017 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:targetApi="21"
+    android:width="40dp"
+    android:height="40dp"
+    android:viewportWidth="192"
+    android:viewportHeight="192">
+
+    <path
+        android:fillColor="#E0E0E0"
+        android:pathData="M96,0C43.01,0,0,43.01,0,96s43.01,96,96,96s96-43.01,96-96S148.99,0,96,0z" />
+    <path
+        android:fillColor="#BDBDBD"
+        android:pathData="M96,85.09c13.28,0,24-10.72,24-24c0-13.28-10.72-24-24-24s-24,10.72-24,24
+C72,74.37,82.72,85.09,96,85.09z" />
+    <path
+        android:fillColor="#BDBDBD"
+        android:pathData="M96,99.27c-29.33,0-52.36,14.18-52.36,27.27c11.09,17.06,30.51,28.36,52.36,28.36
+s41.27-11.3,52.36-28.36C148.36,113.45,125.33,99.27,96,99.27z" />
+    <path
+        android:pathData="M 0 0 H 192 V 192 H 0 V 0 Z" />
+</vector>