Add a X-Requested-With header to URL requests for PPAPI Flash (only).

chrome/test/ppapi/ppapi_browsertest.cc

 // Copyright (c) 2012 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 "chrome/test/ppapi/ppapi_test.h"
 
 #include "base/test/test_timeouts.h"
 #include "build/build_config.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 430 matching lines @@
   RunTestViaHTTP( \
       LIST_TEST(URLLoader_UntrustedHttpRequests) \
       LIST_TEST(URLLoader_FollowURLRedirect) \
       LIST_TEST(URLLoader_AuditURLRedirect) \
       LIST_TEST(URLLoader_AbortCalls) \
       LIST_TEST(URLLoader_UntendedLoad) \
       LIST_TEST(URLLoader_PrefetchBufferThreshold) \
   )
 
 // Note: we do not support Trusted APIs in NaCl, so these will be skipped.
+// XRequestedWithHeader isn't trusted per-se, but the header isn't provided
+// for NaCl and thus must be skipped.
 #define RUN_URLLOADER_TRUSTED_SUBTESTS \
   RunTestViaHTTP( \
       LIST_TEST(URLLoader_TrustedSameOriginRestriction) \
       LIST_TEST(URLLoader_TrustedCrossOriginRequest) \
       LIST_TEST(URLLoader_TrustedHttpRequests) \
+      LIST_TEST(URLLoader_XRequestedWithHeader) \
   )
 
 IN_PROC_BROWSER_TEST_F(PPAPITest, URLLoader0) {
   RUN_URLLOADER_SUBTESTS_0;
 }
 IN_PROC_BROWSER_TEST_F(PPAPITest, URLLoader1) {
   RUN_URLLOADER_SUBTESTS_1;
 }
 IN_PROC_BROWSER_TEST_F(PPAPITest, URLLoader2) {
   RUN_URLLOADER_SUBTESTS_2;
@@ skipping 863 matching lines @@
           LIST_TEST(FlashDRM_GetHmonitor)
           LIST_TEST(FlashDRM_GetVoucherFile));
 }
 
 TEST_PPAPI_IN_PROCESS(TalkPrivate)
 TEST_PPAPI_OUT_OF_PROCESS(TalkPrivate)
 
 #if defined(OS_CHROMEOS)
 TEST_PPAPI_OUT_OF_PROCESS(OutputProtectionPrivate)
 #endif