Add a content API for postMessage

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 44bacadc7560bdecf8bc389ba02da93ba067e479..e35ea14eddbb77a4098890821cb1ac081da0f15e 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -16,6 +16,7 @@
 #include "base/debug/trace_event.h"
 #include "base/files/file_path.h"
 #include "base/i18n/rtl.h"
+#include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
@@ -2969,6 +2970,22 @@ void RenderViewImpl::OnPostMessageEvent(
                                       base::MessageLoopProxy::current().get());
   }
 
+  WebSerializedScriptValue serialized_script_value;
+  if (params.is_data_raw_string) {
+    v8::HandleScope handle_scope(v8::Isolate::GetCurrent());
+    v8::Local<v8::Context> context = frame->mainWorldScriptContext();
+    v8::Context::Scope context_scope(context);
+    V8ValueConverterImpl converter;
+    converter.SetDateAllowed(true);
+    converter.SetRegExpAllowed(true);
+    scoped_ptr<base::Value> value(new base::StringValue(params.data));
+    v8::Handle<v8::Value> result_value = converter.ToV8Value(value.get(),
+                                                             context);
+    serialized_script_value = WebSerializedScriptValue::serialize(result_value);
+  } else {
+    serialized_script_value = WebSerializedScriptValue::fromString(params.data);
+  }
+
   // Create an event with the message.  The final parameter to initMessageEvent
   // is the last event ID, which is not used with postMessage.
   WebDOMEvent event = frame->document().createEvent("MessageEvent");
@@ -2976,7 +2993,7 @@ void RenderViewImpl::OnPostMessageEvent(
   msg_event.initMessageEvent("message",
                              // |canBubble| and |cancellable| are always false
                              false, false,
-                             WebSerializedScriptValue::fromString(params.data),
+                             serialized_script_value,
                              params.source_origin, source_frame, "", channels);
 
   // We must pass in the target_origin to do the security check on this side,