Pepper: Simplify TempFile in trusted plugin.

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 6ce36469c42e29b8f4d203662042b4c508606ec2..537ac066f1bef42f1ff59e70be9dfbbce1ffcca6 100644
--- a/ppapi/native_client/src/trusted/plugin/pnacl_coordinator.cc
+++ b/ppapi/native_client/src/trusted/plugin/pnacl_coordinator.cc
@@ -338,8 +338,7 @@ void PnaclCoordinator::BitcodeStreamCacheHit(PP_FileHandle handle) {
     BitcodeStreamDidFinish(PP_ERROR_FAILED);
     return;
   }
-  *temp_nexe_file_->internal_handle() = handle;
-  // Open it for reading as the cached nexe file.
+  temp_nexe_file_.reset(new TempFile(plugin_, handle));
   NexeReadDidOpen(temp_nexe_file_->Open(false));
 }
 
@@ -347,12 +346,10 @@ void PnaclCoordinator::BitcodeStreamCacheMiss(int64_t expected_pexe_size) {
   HistogramEnumerateTranslationCache(plugin_->uma_interface(), false);
   expected_pexe_size_ = expected_pexe_size;
 
-  // Open an object file first so the translator can start writing to it
-  // during streaming translation.
-  temp_nexe_file_.reset(new TempFile(plugin_));
-
   for (int i = 0; i < split_module_count_; i++) {
-    nacl::scoped_ptr<TempFile> temp_file(new TempFile(plugin_));
+    PP_FileHandle obj_handle =
+        plugin_->nacl_interface()->CreateTemporaryFile(plugin_->pp_instance());
+    nacl::scoped_ptr<TempFile> temp_file(new TempFile(plugin_, obj_handle));
     int32_t pp_error = temp_file->Open(true);
     if (pp_error != PP_OK) {
       ReportPpapiError(PP_NACL_ERROR_PNACL_CREATE_TEMP,
@@ -367,6 +364,9 @@ void PnaclCoordinator::BitcodeStreamCacheMiss(int64_t expected_pexe_size) {
 
   // Open the nexe file for connecting ld and sel_ldr.
   // Start translation when done with this last step of setup!
+  PP_FileHandle nexe_handle =
+      plugin_->nacl_interface()->CreateTemporaryFile(plugin_->pp_instance());
+  temp_nexe_file_.reset(new TempFile(plugin_, nexe_handle));
   RunTranslate(temp_nexe_file_->Open(true));
 }