Add a content API for postMessage

content/browser/android/content_view_core_impl.cc

Index: content/browser/android/content_view_core_impl.cc
diff --git a/content/browser/android/content_view_core_impl.cc b/content/browser/android/content_view_core_impl.cc
index 16e83d8a457ae3969bb8eed13a164c4879ec6290..6d27cdbbd9219e1fc0cb098b2133d159efaa52e9 100644
--- a/content/browser/android/content_view_core_impl.cc
+++ b/content/browser/android/content_view_core_impl.cc
@@ -1423,6 +1423,26 @@ void ContentViewCoreImpl::EvaluateJavaScript(JNIEnv* env,
       c_callback);
 }
 
+// TODO(sgurun) add support for posting a frame whose name is known (only
+//               main frame is supported at this time, see crbug.com/389721)
+// TODO(sgurun) add support for passing message ports
+void ContentViewCoreImpl::PostMessageToFrame(JNIEnv* env, jobject obj,
+    jstring frame_name, jstring message, jstring source_origin,
+    jstring target_origin) {
+
+  RenderViewHost* host = web_contents_->GetRenderViewHost();
+  ViewMsg_PostMessage_Params params;
+  params.source_origin = ConvertJavaStringToUTF16(env, source_origin);
+  params.target_origin = ConvertJavaStringToUTF16(env, target_origin);
+  params.data = ConvertJavaStringToUTF16(env, message);
+  params.is_data_raw_string = true;
+  // TODO(sgurun) What is the right value here?
+  params.source_routing_id = MSG_ROUTING_NONE;
+  if (host)

[mnaganov (inactive), 2014/07/14 15:19:29]

nit: bail out early if there is no host?

[sgurun-gerrit only, 2014/07/16 00:43:28]

Done.

+    host->Send(new ViewMsg_PostMessageEvent(host->GetRoutingID(), params));
+}
+
+
 bool ContentViewCoreImpl::GetUseDesktopUserAgent(
     JNIEnv* env, jobject obj) {
   NavigationEntry* entry = web_contents_->GetController().GetVisibleEntry();