Revert of Mojo C++ bindings: make ipc/ mojom targets to use STL string/vector types

ipc/ipc_channel_mojo_unittest.cc

 // Copyright 2014 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 "ipc/ipc_channel_mojo.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 606 matching lines @@
   }
 
   void RegisterInterfaceFactory(IPC::Channel* channel) {
     channel->GetAssociatedInterfaceSupport()->AddAssociatedInterface(
         base::Bind(&ListenerWithSimpleAssociatedInterface::BindRequest,
                    base::Unretained(this)));
   }
 
  private:
   // IPC::mojom::SimpleTestDriver:
-  void ExpectString(const std::string& str) override {
+  void ExpectString(const mojo::String& str) override {
     next_expected_string_ = str;
   }
 
   void RequestQuit(const RequestQuitCallback& callback) override {
     EXPECT_EQ(kNumMessages, num_messages_received_);
     received_quit_ = true;
     callback.Run();
     base::MessageLoop::current()->QuitWhenIdle();
   }
 
@@ skipping 156 matching lines @@
         base::Bind(&ListenerWithSimpleProxyAssociatedInterface::BindRequest,
                    base::Unretained(this)));
   }
 
   bool received_all_messages() const {
     return num_messages_received_ == kNumMessages && received_quit_;
   }
 
  private:
   // IPC::mojom::SimpleTestDriver:
-  void ExpectString(const std::string& str) override {
+  void ExpectString(const mojo::String& str) override {
     next_expected_string_ = str;
   }
 
   void RequestQuit(const RequestQuitCallback& callback) override {
     received_quit_ = true;
     callback.Run();
     binding_.Close();
     base::MessageLoop::current()->QuitWhenIdle();
   }
 
@@ skipping 229 matching lines @@
   Connect(&listener);
 
   base::MessageLoop::current()->Run();
 
   Close();
 }
 
 #endif  // OS_LINUX
 
 }  // namespace