Rename ViewportObserver to SkyEngine

sky/shell/android/platform_view_android.cc

 // Copyright 2015 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 "sky/shell/android/platform_view_android.h"
 
 #include <android/input.h>
 #include <android/native_window_jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/bind.h"
 #include "base/location.h"
 #include "jni/PlatformViewAndroid_jni.h"
 #include "sky/shell/shell.h"
 #include "sky/shell/shell_view.h"
 
 namespace sky {
 namespace shell {
 
-static jlong Attach(JNIEnv* env, jclass clazz, jint viewportObserverHandle) {
+static jlong Attach(JNIEnv* env, jclass clazz, jint skyEngineHandle) {
   ShellView* shell_view = new ShellView(Shell::Shared());
   auto view = static_cast<PlatformViewAndroid*>(shell_view->view());
   view->SetShellView(make_scoped_ptr(shell_view));
-  view->ConnectToViewportObserver(
-      mojo::MakeRequest<ViewportObserver>(mojo::ScopedMessagePipeHandle(
-          mojo::MessagePipeHandle(viewportObserverHandle))));
+  view->ConnectToEngine(
+      mojo::MakeRequest<SkyEngine>(mojo::ScopedMessagePipeHandle(
+          mojo::MessagePipeHandle(skyEngineHandle))));
   return reinterpret_cast<jlong>(shell_view->view());
 }
 
 // static
 bool PlatformViewAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 PlatformView* PlatformView::Create(const Config& config) {
   return new PlatformViewAndroid(config);
@@ skipping 37 matching lines @@
   shell_view_ = shell_view.Pass();
 }
 
 void PlatformViewAndroid::ReleaseWindow() {
   ANativeWindow_release(window_);
   window_ = nullptr;
 }
 
 }  // namespace shell
 }  // namespace sky