Pull PPAPI to get the paint aggregator, hook up UI test.

chrome/test/ui/ppapi_uitest.cc

 // Copyright (c) 2010 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.
 
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "build/build_config.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/automation/tab_proxy.h"
 #include "chrome/test/ui/ui_test.h"
@@ skipping 100 matching lines @@
 }
 
 TEST_F(PPAPITest, Buffer) {
   RunTest("Buffer");
 }
 
 TEST_F(PPAPITest, URLLoader) {
   RunTestViaHTTP("URLLoader");
 }
 
+TEST_F(PPAPITest, PaintAgggregator) {
+  RunTestViaHTTP("PaintAggregator");
+}
+
 // http://crbug.com/48544
 TEST_F(PPAPITest, FAILS_Scrollbar) {
   RunTest("Scrollbar");
 }