Consolidate tests for HTTP request restrictions on untrusted loaders.

ppapi/tests/test_url_loader.h

Index: ppapi/tests/test_url_loader.h
===================================================================
--- ppapi/tests/test_url_loader.h	(revision 113354)
+++ ppapi/tests/test_url_loader.h	(working copy)
@@ -64,14 +64,8 @@
   std::string TestTrustedCrossOriginRequest();
   std::string TestUntrustedJavascriptURLRestriction();
   std::string TestTrustedJavascriptURLRestriction();
-  std::string TestUntrustedMethodRestriction();
-  std::string TestTrustedMethodRestriction();
-  std::string TestUntrustedHeaderRestriction();
-  std::string TestTrustedHeaderRestriction();
-  std::string TestUntrustedCustomReferrer();
-  std::string TestTrustedCustomReferrer();
-  std::string TestUntrustedCustomContentTransferEncoding();
-  std::string TestTrustedCustomContentTransferEncoding();
+  std::string TestUntrustedHttpRequests();
+  std::string TestTrustedHttpRequests();
   std::string TestAuditURLRedirect();
   std::string TestAbortCalls();
   std::string TestUntendedLoad();