Avoid blocking the PNaCl translator processes when chrome NaCl GDB flag is on.

ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc

Index: ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc
diff --git a/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc b/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc
index 179d88ef3a587020ae572bfa1d637eb6b79d4d39..01ac5c046040dd97287576fe5fb81251176cc2c5 100644
--- a/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc
+++ b/ppapi/native_client/src/trusted/plugin/pnacl_translate_thread.cc
@@ -115,8 +115,13 @@ NaClSubprocess* PnaclTranslateThread::StartSubprocess(
   PLUGIN_PRINTF(("PnaclTranslateThread::StartSubprocess (url_for_nexe=%s)\n",
                  url_for_nexe.c_str()));
   nacl::DescWrapper* wrapper = resources_->WrapperForUrl(url_for_nexe);
+  // Supply a URL for the translator components, different from the app URL,
+  // so that NaCl GDB can filter-out the translator processes (and not debug
+  // the translator itself). Must have a full URL with schema, otherwise the
+  // string gets silently dropped by GURL.
+  nacl::string full_url = resources_->GetFullUrl(url_for_nexe);
   nacl::scoped_ptr<NaClSubprocess> subprocess(
-      plugin_->LoadHelperNaClModule(wrapper, manifest, error_info));
+      plugin_->LoadHelperNaClModule(full_url, wrapper, manifest, error_info));
   if (subprocess.get() == NULL) {
     PLUGIN_PRINTF((
         "PnaclTranslateThread::StartSubprocess: subprocess creation failed\n"));