[remoting android] Add and build host code.

remoting/host/input_injector_android.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 "base/memory/ptr_util.h"
+#include "remoting/host/input_injector.h"
+
+namespace remoting {
+
+namespace {
+
+class InputInjectorAndroid : public InputInjector {
+ public:
+  InputInjectorAndroid() {}
+
+  void InjectClipboardEvent(const protocol::ClipboardEvent& event) override {
+    NOTIMPLEMENTED();
+  }
+
+  void InjectKeyEvent(const protocol::KeyEvent& event) override {
+    NOTIMPLEMENTED();
+  }
+
+  void InjectTextEvent(const protocol::TextEvent& event) override {
+    NOTIMPLEMENTED();
+  }
+
+  void InjectMouseEvent(const protocol::MouseEvent& event) override {
+    NOTIMPLEMENTED();
+  }
+
+  void InjectTouchEvent(const protocol::TouchEvent& event) override {
+    NOTIMPLEMENTED();
+  }
+
+  void Start(
+      std::unique_ptr<protocol::ClipboardStub> client_clipboard) override {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(InputInjectorAndroid);
+};
+
+}  // namespace
+
+// static
+std::unique_ptr<InputInjector> InputInjector::Create(
+    scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
+    scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner) {
+  return base::WrapUnique(new InputInjectorAndroid());
+}
+
+// static
+bool InputInjector::SupportsTouchEvents() {
+  return false;
+}
+
+}  // namespace remoting