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

ppapi/tests/test_url_loader.cc

Index: ppapi/tests/test_url_loader.cc
diff --git a/ppapi/tests/test_url_loader.cc b/ppapi/tests/test_url_loader.cc
index ca4ef7a779986016af2f5d2ce319d6d77ea8741c..0d78efad6e994a2e74a5dc9ac0498f57066cd60a 100644
--- a/ppapi/tests/test_url_loader.cc
+++ b/ppapi/tests/test_url_loader.cc
@@ -142,6 +142,7 @@ void TestURLLoader::RunTests(const std::string& filter) {
   RUN_CALLBACK_TEST(TestURLLoader, AbortCalls, filter);
   RUN_CALLBACK_TEST(TestURLLoader, UntendedLoad, filter);
   RUN_CALLBACK_TEST(TestURLLoader, PrefetchBufferThreshold, filter);
+  RUN_CALLBACK_TEST(TestURLLoader, XRequestedWithHeader, filter);
   // These tests connect to localhost with privacy mode enabled:
   RUN_CALLBACK_TEST(TestURLLoader, UntrustedSameOriginRestriction, filter);
   RUN_CALLBACK_TEST(TestURLLoader, UntrustedCrossOriginRequest, filter);
@@ -860,5 +861,17 @@ std::string TestURLLoader::TestPrefetchBufferThreshold() {
   PASS();
 }
 
+// TODO(viettrungluu): This test properly belongs elsewhere. It tests that
+// Chrome properly tags URL requests made on behalf of Pepper plugins (with an
+// X-Requested-With header), but this isn't, strictly speaking, a PPAPI
+// behavior.
+std::string TestURLLoader::TestXRequestedWithHeader() {
+  pp::URLRequestInfo request(instance_);
+  request.SetURL("/echoheader?X-Requested-With");
+  // The name and version of the plugin is set from the command-line (see
+  // chrome/test/ppapi/ppapi_test.cc.
+  return LoadAndCompareBody(request, "PPAPITests/1.2.3");
+}
+
 // TODO(viettrungluu): Add tests for  Get{Upload,Download}Progress, Close
 // (including abort tests if applicable).