Implement "Look Up In Dictionary" context menu item asynchronously.

content/renderer/text_input_client_observer.cc

Index: content/renderer/text_input_client_observer.cc
diff --git a/content/renderer/text_input_client_observer.cc b/content/renderer/text_input_client_observer.cc
index 049f87c5e025f26fdb51d285074d7d3d5f5a16ea..c3ca1df0af902eeebd2ebcafa9fa5aa1018fbba4 100644
--- a/content/renderer/text_input_client_observer.cc
+++ b/content/renderer/text_input_client_observer.cc
@@ -35,7 +35,6 @@ bool TextInputClientObserver::OnMessageReceived(const IPC::Message& message) {
                         OnCharacterIndexForPoint)
     IPC_MESSAGE_HANDLER(TextInputClientMsg_FirstRectForCharacterRange,
                         OnFirstRectForCharacterRange)
-    IPC_MESSAGE_HANDLER(TextInputClientMsg_StringForRange, OnStringForRange)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -86,21 +85,4 @@ void TextInputClientObserver::OnFirstRectForCharacterRange(gfx::Range range) {
   Send(new TextInputClientReplyMsg_GotFirstRectForRange(routing_id(), rect));
 }
 
-void TextInputClientObserver::OnStringForRange(gfx::Range range) {
-#if defined(OS_MACOSX)
-  NSAttributedString* string = nil;
-  blink::WebLocalFrame* frame = webview()->focusedFrame()->toWebLocalFrame();
-  if (frame) {
-    string = blink::WebSubstringUtil::attributedSubstringInRange(
-        frame, range.start(), range.length());
-  }
-  scoped_ptr<const mac::AttributedStringCoder::EncodedString> encoded(
-      mac::AttributedStringCoder::Encode(string));
-  Send(new TextInputClientReplyMsg_GotStringForRange(routing_id(),
-      *encoded.get()));
-#else
-  NOTIMPLEMENTED();
-#endif
-}
-
 }  // namespace content