Pepper: Make pending_sync_msgs_ local to IO thread.

ppapi/proxy/nacl_message_scanner_unittest.cc

Index: ppapi/proxy/nacl_message_scanner_unittest.cc
diff --git a/ppapi/proxy/nacl_message_scanner_unittest.cc b/ppapi/proxy/nacl_message_scanner_unittest.cc
index 3e439559c71b71a704dad515db6da7e208e7d1af..af4d37c33142ec6c12ff09d5667379f5d7ffea99 100644
--- a/ppapi/proxy/nacl_message_scanner_unittest.cc
+++ b/ppapi/proxy/nacl_message_scanner_unittest.cc
@@ -23,16 +23,6 @@ class NaClMessageScannerTest : public PluginProxyTest {
  public:
   NaClMessageScannerTest() {}
 
-  uint32 FindPendingSyncMessage(
-      const NaClMessageScanner& scanner,
-      const IPC::Message& msg) {
-    int msg_id = IPC::SyncMessage::GetMessageId(msg);
-    std::map<int, uint32>::const_iterator it =
-        scanner.pending_sync_msgs_.find(msg_id);
-    // O can signal that no message was found.
-    return (it != scanner.pending_sync_msgs_.end()) ? it->second : 0;
-  }
-
   NaClMessageScanner::FileSystem* FindFileSystem(
       const NaClMessageScanner& scanner,
       PP_Resource file_system) {
@@ -65,27 +55,6 @@ class NaClMessageScannerTest : public PluginProxyTest {
   }
 };
 
-TEST_F(NaClMessageScannerTest, SyncMessageAndReply) {
-  NaClMessageScanner test;
-  ppapi::proxy::SerializedHandle handle(
-      ppapi::proxy::SerializedHandle::SHARED_MEMORY);
-  int id = -1;
-  IPC::Message msg =
-      PpapiHostMsg_PPBGraphics3D_CreateTransferBuffer(
-          ppapi::API_ID_PPB_GRAPHICS_3D,
-          HostResource(),
-          4096,  // size
-          &id,
-          &handle);
-  scoped_ptr<IPC::Message> new_msg_ptr;
-  EXPECT_NE(msg.type(), FindPendingSyncMessage(test, msg));
-  test.ScanUntrustedMessage(msg, &new_msg_ptr);
-  EXPECT_FALSE(new_msg_ptr);
-  EXPECT_EQ(msg.type(), FindPendingSyncMessage(test, msg));
-
-  // TODO(bbudge) Figure out how to put together a sync reply message.
-}
-
 TEST_F(NaClMessageScannerTest, FileOpenClose) {
   NaClMessageScanner test;
   std::vector<SerializedHandle> unused_handles;