[Mac] Implement the system dictionary popup by implementing NSTextInput methods.

chrome/browser/renderer_host/render_view_host.cc

 // Copyright (c) 2010 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 "chrome/browser/renderer_host/render_view_host.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 1284 matching lines @@
     } else if (text_direction_hint == WebKit::WebTextDirectionRightToLeft &&
                !base::i18n::IsRTL()) {
       // Force the tooltip to have RTL directionality.
       base::i18n::WrapStringWithRTLFormatting(&wrapped_tooltip_text);
     }
   }
   if (view())
     view()->SetTooltipText(wrapped_tooltip_text);
 }
 
-void RenderViewHost::OnMsgSelectionChanged(const std::string& text) {
+void RenderViewHost::OnMsgSelectionChanged(const std::string& text,
+                                           int start,
+                                           int end) {
   if (view())
-    view()->SelectionChanged(text);
+    view()->SelectionChanged(text, start, end);
 }
 
 void RenderViewHost::OnMsgRunFileChooser(
     const ViewHostMsg_RunFileChooser_Params& params) {
   RenderViewHostDelegate::FileSelect* file_select_delegate =
       delegate()->GetFileSelectDelegate();
   if (file_select_delegate)
     file_select_delegate->RunFileChooser(this, params);
 }
 
@@ skipping 692 matching lines @@
   if (printer_query.get()) {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         NewRunnableMethod(printer_query.get(),
                           &printing::PrinterQuery::StopWorker));
   }
 
   // Send the printingDone msg for now.
   Send(new ViewMsg_PrintingDone(routing_id(), params.document_cookie, true));
 }