Implement Mac Pop-up Dictionary for OOPIF.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 430c7c9b7acaf27a0893850fec98a5d40ce049e6..0a753da6ec7ab28d5de6df431d9361cf4bf761cf 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -52,6 +52,7 @@
 #include "content/renderer/render_widget_owner_delegate.h"
 #include "content/renderer/renderer_blink_platform_impl.h"
 #include "content/renderer/resizing_mode_selector.h"
+#include "ipc/ipc_message_start.h"
 #include "ipc/ipc_sync_message.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/public/platform/WebCursorInfo.h"
@@ -474,6 +475,13 @@ void RenderWidget::OnShowHostContextMenu(ContextMenuParams* params) {
 }
 
 bool RenderWidget::OnMessageReceived(const IPC::Message& message) {
+#if defined(OS_MACOSX)
+  if (IPC_MESSAGE_CLASS(message) == TextInputClientMsgStart) {
+    FOR_EACH_OBSERVER(RenderFrameImpl, render_frames_,
+                      OnTextInputClientMessageReceived(this, message));
+    return true;
+  }
+#endif
   if (mouse_lock_dispatcher_ &&
       mouse_lock_dispatcher_->OnMessageReceived(message))
     return true;