Add a content API for postMessage

content/browser/android/content_view_core_impl.cc

 // Copyright 2012 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 "content/browser/android/content_view_core_impl.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
@@ skipping 1405 matching lines @@
   ScopedJavaGlobalRef<jobject> j_callback;
   j_callback.Reset(env, callback);
   content::RenderFrameHost::JavaScriptResultCallback c_callback =
       base::Bind(&JavaScriptResultCallback, j_callback);
 
   web_contents_->GetMainFrame()->ExecuteJavaScript(
       ConvertJavaStringToUTF16(env, script),
       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();
   return entry && entry->GetIsOverridingUserAgent();
 }
 
 void ContentViewCoreImpl::UpdateImeAdapter(long native_ime_adapter,
                                            int text_input_type,
                                            const std::string& text,
                                            int selection_start,
@@ skipping 221 matching lines @@
       reinterpret_cast<ui::WindowAndroid*>(window_android),
       retained_objects_set);
   return reinterpret_cast<intptr_t>(view);
 }
 
 bool RegisterContentViewCore(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content