Plumb through cache_identity from manifest for first sketch of pnacl cache.

ppapi/native_client/src/trusted/plugin/service_runtime.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.
  */
 
 #define NACL_LOG_MODULE_NAME "Plugin::ServiceRuntime"
 
 #include "native_client/src/trusted/plugin/service_runtime.h"
 
@@ skipping 228 matching lines @@
 void PluginReverseInterface::OpenManifestEntry_MainThreadContinuation(
     OpenManifestEntryResource* p,
     int32_t err) {
   OpenManifestEntryResource *open_cont;
   UNREFERENCED_PARAMETER(err);
   // CallOnMainThread continuations always called with err == PP_OK.
 
   NaClLog(4, "Entered OpenManifestEntry_MainThreadContinuation\n");
 
   std::string mapped_url;
-  if (!manifest_->ResolveKey(p->url, &mapped_url,
+  std::string cache_identity;
+  if (!manifest_->ResolveKey(p->url, &mapped_url, &cache_identity,
                              p->error_info, &p->pnacl_translate)) {
     NaClLog(4, "OpenManifestEntry_MainThreadContinuation: ResolveKey failed\n");
     // Failed, and error_info has the details on what happened.  Wake
     // up requesting thread -- we are done.
     nacl::MutexLocker take(&mu_);
     *p->op_complete_ptr = true;  // done...
     *p->out_desc = -1;       // but failed.
     NaClXCondVarBroadcast(&cv_);
     return;
   }
@@ skipping 33 matching lines @@
     pp::CompletionCallback translate_callback =
         WeakRefNewCallback(
             anchor_,
             this,
             &PluginReverseInterface::BitcodeTranslate_MainThreadContinuation,
             open_cont);
     // Will always call the callback on success or failure.
     pnacl_coordinator_.reset(
         PnaclCoordinator::BitcodeToNative(plugin_,
                                           mapped_url,
+                                          cache_identity,
                                           translate_callback));
   }
   // p is deleted automatically
 }
 
 void PluginReverseInterface::StreamAsFile_MainThreadContinuation(
     OpenManifestEntryResource* p,
     int32_t result) {
   NaClLog(4,
           "Entered StreamAsFile_MainThreadContinuation\n");
@@ skipping 449 matching lines @@
   nacl::MutexLocker take(&mu_);
   return exit_status_;
 }
 
 void ServiceRuntime::set_exit_status(int exit_status) {
   nacl::MutexLocker take(&mu_);
   exit_status_ = exit_status & 0xff;
 }
 
 }  // namespace plugin