Revert 187340 "PPAPI: Remove threading options; it's always on"

ppapi/proxy/flash_resource_unittest.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.
 
 #include "ppapi/c/dev/ppb_video_capture_dev.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/private/ppb_flash.h"
-#include "ppapi/proxy/locking_resource_releaser.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/ppapi_proxy_test.h"
+#include "ppapi/shared_impl/scoped_pp_resource.h"
 #include "ppapi/thunk/thunk.h"
 
 namespace ppapi {
 namespace proxy {
 
 namespace {
 
 typedef PluginProxyTest FlashResourceTest;
 
 void* Unused(void* user_data, uint32_t element_count, uint32_t element_size) {
@@ skipping 15 matching lines @@
   PpapiPluginMsg_DeviceEnumeration_EnumerateDevicesReply reply_msg(
       reply_device_ref_data);
   ResourceSyncCallHandler enumerate_video_devices_handler(
       &sink(),
       PpapiHostMsg_DeviceEnumeration_EnumerateDevices::ID,
       expected_result,
       reply_msg);
   sink().AddFilter(&enumerate_video_devices_handler);
 
   // Set up the arguments to the call.
-  LockingResourceReleaser video_capture(
+  ScopedPPResource video_capture(ScopedPPResource::PassRef(),
       ::ppapi::thunk::GetPPB_VideoCapture_Dev_0_3_Thunk()->Create(
           pp_instance()));
   std::vector<PP_Resource> unused;
   PP_ArrayOutput output;
   output.GetDataBuffer = &Unused;
   output.user_data = &unused;
 
   // Make the call.
   const PPB_Flash_12_6* flash_iface = ::ppapi::thunk::GetPPB_Flash_12_6_Thunk();
   int32_t actual_result = flash_iface->EnumerateVideoCaptureDevices(
       pp_instance(), video_capture.get(), output);
 
   // Check the result is as expected.
   EXPECT_EQ(expected_result, actual_result);
 
   // Should have sent an "DeviceEnumeration_EnumerateDevices" message.
   ASSERT_TRUE(enumerate_video_devices_handler.last_handled_msg().type() ==
       PpapiHostMsg_DeviceEnumeration_EnumerateDevices::ID);
 
   // Remove the filter or it will be destroyed before the sink() is destroyed.
   sink().RemoveFilter(&enumerate_video_devices_handler);
 }
 
 }  // namespace proxy
 }  // namespace ppapi