Revert of [Media Router] Remove binary messaging implementation.

chrome/browser/media/android/router/media_router_android.cc

Index: chrome/browser/media/android/router/media_router_android.cc
diff --git a/chrome/browser/media/android/router/media_router_android.cc b/chrome/browser/media/android/router/media_router_android.cc
index 0dc832c1efb18bb774389285a1915f9195bc60cd..91cae709091fe5e8e95c1660da7ee28fe03b6a24 100644
--- a/chrome/browser/media/android/router/media_router_android.cc
+++ b/chrome/browser/media/android/router/media_router_android.cc
@@ -184,8 +184,15 @@
     const MediaRoute::Id& route_id,
     std::unique_ptr<std::vector<uint8_t>> data,
     const SendRouteMessageCallback& callback) {
-  // Binary messaging is not supported on Android.
-  callback.Run(false);
+  int callback_id = message_callbacks_.Add(
+      base::MakeUnique<SendRouteMessageCallback>(callback));
+  JNIEnv* env = base::android::AttachCurrentThread();
+  ScopedJavaLocalRef<jstring> jroute_id =
+      base::android::ConvertUTF8ToJavaString(env, route_id);
+  ScopedJavaLocalRef<jbyteArray> jbyte_array =
+      base::android::ToJavaByteArray(env, &((*data)[0]), data->size());
+  Java_ChromeMediaRouter_sendBinaryMessage(env, java_media_router_, jroute_id,
+                                           jbyte_array, callback_id);
 }
 
 void MediaRouterAndroid::AddIssue(const IssueInfo& issue_info) {