Move textual replacement to WebContents.

chrome/browser/renderer_host/chrome_render_widget_host_view_mac_delegate.mm

 // Copyright (c) 2012 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.
 
 #import "chrome/browser/renderer_host/chrome_render_widget_host_view_mac_delegate.h"
 
 #include <cmath>
 
 #include "base/prefs/pref_service.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 200 matching lines @@
 // The next five methods are implemented here since this class is the first
 // responder for anything in the browser.
 
 // This message is sent whenever the user specifies that a word should be
 // changed from the spellChecker.
 - (void)changeSpelling:(id)sender {
   // Grab the currently selected word from the spell panel, as this is the word
   // that we want to replace the selected word in the text with.
   NSString* newWord = [[sender selectedCell] stringValue];
   if (newWord != nil) {
-    renderWidgetHost_->Replace(base::SysNSStringToUTF16(newWord));
+    content::WebContents* webContents =
+        content::WebContents::FromRenderViewHost(
+            RenderViewHost::From(renderWidgetHost_));
+    webContents->Replace(base::SysNSStringToUTF16(newWord));
   }
 }
 
 // This message is sent by NSSpellChecker whenever the next word should be
 // advanced to, either after a correction or clicking the "Find Next" button.
 // This isn't documented anywhere useful, like in NSSpellProtocol.h with the
 // other spelling panel methods. This is probably because Apple assumes that the
 // the spelling panel will be used with an NSText, which will automatically
 // catch this and advance to the next word for you. Thanks Apple.
 // This is also called from the Edit -> Spelling -> Check Spelling menu item.
@@ skipping 29 matching lines @@
 }
 
 - (void)spellCheckEnabled:(BOOL)enabled checked:(BOOL)checked {
   spellcheckEnabled_ = enabled;
   spellcheckChecked_ = checked;
 }
 
 // END Spellchecking methods
 
 @end