Introduce ViewRoot to forward input/view events to native

ui/android/event_handler.cc

Index: ui/android/event_handler.cc
diff --git a/ui/android/event_handler.cc b/ui/android/event_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b067a182590b22eaf55d486bb9115907af08f632
--- /dev/null
+++ b/ui/android/event_handler.cc
@@ -0,0 +1,27 @@
+// 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 "ui/android/event_handler.h"
+
+#include "base/android/scoped_java_ref.h"
+#include "jni/EventHandler_jni.h"
+#include "ui/android/view_android.h"
+
+using base::android::JavaParamRef;
+
+namespace ui {
+
+void OnPhysicalBackingSizeChanged(JNIEnv* env,

[boliu, 2016/12/06 00:34:14]

is this static in the generated header? if so, add "// static", if not, then
that's not good because it's supposed to be static..

[Jinsuk Kim, 2016/12/06 07:35:07]

Yes it has static. Put it here too.

+                                  const JavaParamRef<jclass>& jcaller,
+                                  jlong native_view,
+                                  int width,
+                                  int height) {
+  ViewAndroid* view_android = reinterpret_cast<ViewAndroid*>(native_view);
+  view_android->OnPhysicalBackingSizeChanged(width, height);
+}
+
+bool RegisterEventHandler(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}

[boliu, 2016/12/06 00:34:14]

nit: blank line below

[Jinsuk Kim, 2016/12/06 07:35:07]

Done.

+}  // namespace content