Removes the useless definition of GetAttributedSubstringFromRange.

content/browser/renderer_host/text_input_client_mac.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_TEXT_INPUT_CLIENT_MAC_H_
 #define CONTENT_BROWSER_RENDERER_HOST_TEXT_INPUT_CLIENT_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_block.h"
@@ skipping 39 matching lines @@
   // Each of the three methods mentioned above has an associated pair of methods
   // to get data from the renderer. The Get*() methods block the calling thread
   // (always the UI thread) with a short timeout after the async message has
   // been sent to the renderer to lookup the information needed to respond to
   // the system. The Set*AndSignal() methods store the looked up information in
   // this service and signal the condition to allow the Get*() methods to
   // unlock and return that stored value.
   //
   // Returns NSNotFound if the request times out or is not completed.
   NSUInteger GetCharacterIndexAtPoint(RenderWidgetHost* rwh, gfx::Point point);
-  // Returns nil if the request times out or is completed.
-  NSAttributedString* GetAttributedSubstringFromRange(
-      RenderWidgetHost* rwh, NSRange range);
   // Returns NSZeroRect if the request times out or is not completed. The result
   // is in WebKit coordinates.
   NSRect GetFirstRectForRange(RenderWidgetHost* rwh, NSRange range);
 
   // When the renderer sends the ViewHostMsg reply, the RenderMessageFilter will
   // call the corresponding method on the IO thread to unlock the condition and
   // allow the Get*() methods to continue/return.
   void SetCharacterIndexAndSignal(NSUInteger index);
   void SetFirstRectAndSignal(NSRect first_rect);
 
@@ skipping 52 matching lines @@
   // The callback when received IPC TextInputClientReplyMsg_GotStringForRange.
   base::mac::ScopedBlock<void(^)(NSAttributedString*, NSPoint)>
       replyForRangeHandler_;
 
   DISALLOW_COPY_AND_ASSIGN(TextInputClientMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_TEXT_INPUT_CLIENT_MAC_H_