Index: webplugin_delegate_impl_mac.mm
===================================================================
--- webplugin_delegate_impl_mac.mm	(revision 114933)
+++ webplugin_delegate_impl_mac.mm	(working copy)
@@ -548,10 +548,14 @@
     // Composition ends on a keydown, so ime_enabled_ will be false at keyup;
     // because the keydown wasn't sent to the plugin, the keyup shouldn't be
     // either (per the spec).
-    if (event.type == WebInputEvent::KeyDown)
+    if (event.type == WebInputEvent::KeyDown) {
       ++keyup_ignore_count_;
-    else
+      const WebKeyboardEvent* key_event =
+          static_cast<const WebKeyboardEvent*>(&event);
+      ImeCompositionCompleted(key_event->text);
+    } else {
       --keyup_ignore_count_;
+    }
     return true;
   }
 
@@ -640,6 +644,9 @@
       event.type == WebInputEvent::KeyDown) {
     StartIme();
     ++keyup_ignore_count_;
+    const WebKeyboardEvent* key_event =
+        static_cast<const WebKeyboardEvent*>(&event);
+    ImeCompositionCompleted(key_event->text);
   }
 
   // Plugins don't give accurate information about whether or not they handled