Break FileIO and URLLoader tests down into individual cases.

ppapi/tests/test_url_loader.h

Index: ppapi/tests/test_url_loader.h
===================================================================
--- ppapi/tests/test_url_loader.h	(revision 112536)
+++ ppapi/tests/test_url_loader.h	(working copy)
@@ -58,13 +58,20 @@
   std::string TestCustomRequestHeader();
   std::string TestFailsBogusContentLength();
   std::string TestStreamToFile();
-  std::string TestSameOriginRestriction();
-  std::string TestCrossOriginRequest();
-  std::string TestJavascriptURLRestriction();
-  std::string TestMethodRestriction();
-  std::string TestHeaderRestriction();
-  std::string TestCustomReferrer();
-  std::string TestCustomContentTransferEncoding();
+  std::string TestUntrustedSameOriginRestriction();
+  std::string TestTrustedSameOriginRestriction();
+  std::string TestUntrustedCrossOriginRequest();
+  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 TestAuditURLRedirect();
   std::string TestAbortCalls();
   std::string TestUntendedLoad();