Make DispatchKeyEventPostIME() asynchronous.

services/ui/ime/ime_unittest.cc

 // Copyright 2016 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 <stdint.h>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
@@ skipping 21 matching lines @@
  private:
   void SetCompositionText(const ui::CompositionText& composition) override {}
   void ConfirmCompositionText() override {}
   void ClearCompositionText() override {}
   void InsertText(const std::string& text) override {}
   void InsertChar(std::unique_ptr<ui::Event> event) override {
     receieved_event_ = std::move(event);
     if (run_loop_)
       run_loop_->Quit();
   }
+  void DispatchKeyEventPostIME(
+      std::unique_ptr<ui::Event> event,
+      const DispatchKeyEventPostIMECallback& callback) override {
+    callback.Run(false);
+  }
 
   mojo::Binding<ui::mojom::TextInputClient> binding_;
   std::unique_ptr<base::RunLoop> run_loop_;
   std::unique_ptr<ui::Event> receieved_event_;
 
   DISALLOW_COPY_AND_ASSIGN(TestTextInputClient);
 };
 
 class IMEAppTest : public service_manager::test::ServiceTest {
  public:
@@ skipping 56 matching lines @@
 
   ui::KeyEvent* received_key_event = received_event->AsKeyEvent();
   EXPECT_EQ(ui::ET_KEY_PRESSED, received_key_event->type());
   EXPECT_TRUE(received_key_event->is_char());
   EXPECT_EQ(char_event.GetCharacter(), received_key_event->GetCharacter());
 
   // Send non-character key event.
   ui::KeyEvent nonchar_event(ui::ET_KEY_PRESSED, ui::VKEY_LEFT, 0);
   EXPECT_FALSE(ProcessKeyEvent(&input_method, ui::Event::Clone(nonchar_event)));
 }