Introduce ViewRoot forwarding input/view events to native

android_webview/native/aw_contents.cc

Index: android_webview/native/aw_contents.cc
diff --git a/android_webview/native/aw_contents.cc b/android_webview/native/aw_contents.cc
index f3a208e56505fb85340dcad3d60be18f5adb56a0..be85577b629fc0e24a3c68c7db7523a5f0730a8b 100644
--- a/android_webview/native/aw_contents.cc
+++ b/android_webview/native/aw_contents.cc
@@ -1257,12 +1257,6 @@ void AwContents::ResumeLoadingCreatedPopupWebContents(
   web_contents_->ResumeLoadingCreatedWebContents();
 }
 
-ScopedJavaLocalRef<jobject> AwContents::GetViewRoot(
-    JNIEnv* env,
-    const JavaParamRef<jobject>& obj) {
-  return web_contents_->GetNativeView()->GetViewRoot();
-}
-
 void SetShouldDownloadFavicons(JNIEnv* env,
                                const JavaParamRef<jclass>& jclazz) {
   g_should_download_favicons = true;