Parametrize names of llc and ld nexes by reading them from the resource info JSON file.

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

Index: ppapi/native_client/src/trusted/plugin/pnacl_coordinator.cc
diff --git a/ppapi/native_client/src/trusted/plugin/pnacl_coordinator.cc b/ppapi/native_client/src/trusted/plugin/pnacl_coordinator.cc
index a938b77243ea1247538eb127b1f46ec092270f1c..613abd4fa2b1958340f0a2e6935fa644cb197562 100644
--- a/ppapi/native_client/src/trusted/plugin/pnacl_coordinator.cc
+++ b/ppapi/native_client/src/trusted/plugin/pnacl_coordinator.cc
@@ -90,9 +90,11 @@ class PnaclManifest : public Manifest {
                             "key did not start with files/");
       return false;
     }
-    // Append what follows files to the pnacl URL prefix.
+    // Resolve the full URL to the file. Provide it with a platform-specific
+    // prefix.
     nacl::string key_basename = key.substr(kFilesPrefix.length());
-    return ResolveURL(key_basename, full_url, error_info);
+    return ResolveURL(PnaclUrls::PrependPlatformPrefix(key_basename),
+                      full_url, error_info);
   }
 
  private:
@@ -237,22 +239,19 @@ PnaclCoordinator* PnaclCoordinator::BitcodeToNative(
                  reinterpret_cast<const void*>(coordinator->manifest_.get()),
                  coordinator->off_the_record_));
 
-  // Load llc and ld.
-  std::vector<nacl::string> resource_urls;
-  resource_urls.push_back(PnaclUrls::GetLlcUrl());
-  resource_urls.push_back(PnaclUrls::GetLdUrl());
-  pp::CompletionCallback resources_cb =
-      coordinator->callback_factory_.NewCallback(
-          &PnaclCoordinator::ResourcesDidLoad);
+  // Loading resources (e.g. llc and ld nexes) is done with PnaclResources.
   coordinator->resources_.reset(
       new PnaclResources(plugin,
                          coordinator,
-                         coordinator->manifest_.get(),
-                         resource_urls,
-                         resources_cb));
+                         coordinator->manifest_.get()));
   CHECK(coordinator->resources_ != NULL);
-  coordinator->resources_->StartLoad();
-  // ResourcesDidLoad will be invoked when all resources have been received.
+
+  // The first step of loading resources: read the resource info file.
+  pp::CompletionCallback resource_info_read_cb =
+      coordinator->callback_factory_.NewCallback(
+          &PnaclCoordinator::ResourceInfoWasRead);
+  coordinator->resources_->ReadResourceInfo(PnaclUrls::GetResourceInfoUrl(),
+                                            resource_info_read_cb);
   return coordinator;
 }
 
@@ -649,6 +648,15 @@ void PnaclCoordinator::NexeReadDidOpen(int32_t pp_error) {
   translate_notify_callback_.Run(pp_error);
 }
 
+void PnaclCoordinator::ResourceInfoWasRead(int32_t pp_error) {
+  PLUGIN_PRINTF(("PluginCoordinator::ResourceInfoWasRead (pp_error=%"
+                NACL_PRId32")\n", pp_error));
+  // Second step of loading resources: call StartLoad.
+  pp::CompletionCallback resources_cb =
+      callback_factory_.NewCallback(&PnaclCoordinator::ResourcesDidLoad);
+  resources_->StartLoad(resources_cb);
+}
+
 void PnaclCoordinator::ResourcesDidLoad(int32_t pp_error) {
   PLUGIN_PRINTF(("PnaclCoordinator::ResourcesDidLoad (pp_error=%"
                  NACL_PRId32")\n", pp_error));