Adding keyboard service.

services/native_viewport/platform_viewport_android.h

 // Copyright 2013 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.
 
 #ifndef SERVICES_NATIVE_VIEWPORT_PLATFORM_VIEWPORT_ANDROID_H_
 #define SERVICES_NATIVE_VIEWPORT_PLATFORM_VIEWPORT_ANDROID_H_
 
 #include "base/android/jni_weak_ref.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/macros.h"
@@ skipping 22 matching lines @@
   void Destroy(JNIEnv* env, jobject obj);
   void SurfaceCreated(JNIEnv* env, jobject obj, jobject jsurface);
   void SurfaceDestroyed(JNIEnv* env, jobject obj);
   void SurfaceSetSize(JNIEnv* env,
                       jobject obj,
                       jint width,
                       jint height,
                       jfloat density);
   bool TouchEvent(JNIEnv* env, jobject obj, jint pointer_id, jint action,
                   jfloat x, jfloat y, jlong time_ms);
+  bool KeyEvent(JNIEnv* env,
+                jobject obj,
+                bool pressed,
+                jint key_code,
+                jint unicode_character);
 
  private:
   // Overridden from PlatformViewport:
   virtual void Init(const gfx::Rect& bounds) override;
   virtual void Show() override;
   virtual void Hide() override;
   virtual void Close() override;
   virtual gfx::Size GetSize() override;
   virtual void SetBounds(const gfx::Rect& bounds) override;
   virtual void SetCapture() override;
   virtual void ReleaseCapture() override;
 
   void ReleaseWindow();
 
   Delegate* delegate_;
   ANativeWindow* window_;
   mojo::ViewportMetricsPtr metrics_;
   ui::SequentialIDGenerator id_generator_;
 
   base::WeakPtrFactory<PlatformViewportAndroid> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformViewportAndroid);
 };
 
 }  // namespace native_viewport
 
 #endif  // SERVICES_NATIVE_VIEWPORT_PLATFORM_VIEWPORT_ANDROID_H_