Cleanup: Remove "gray text" logic from Omnibox

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.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 CHROME_BROWSER_UI_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_
 #define CHROME_BROWSER_UI_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 151 matching lines @@
 // of an I-beam.
 - (void)updateMouseTracking;
 
 // Return the appropriate menu for any decoration under |event|.
 - (NSMenu*)decorationMenuForEvent:(NSEvent*)event;
 
 // Retains |tooltip| (in |currentToolTips_|) and adds this tooltip
 // via -[NSView addToolTipRect:owner:userData:].
 - (void)addToolTip:(NSString*)tooltip forRect:(NSRect)aRect;
 
-// Sets the suggest text that shows at the end of the field's normal text.
-// This can't be simply appended to the field's text storage because that
-// will end any pending IME session.
-- (void)setGrayTextAutocompletion:(NSString*)suggestText
-                        textColor:(NSColor*)suggestColor;
-
 - (NSString*)suggestText;
 - (NSColor*)suggestColor;
 
 // Obtain the bubble anchor point for |decoration|. In window coordinates.
 - (NSPoint)bubblePointForDecoration:(LocationBarDecoration*)decoration;
 
 @end
 
-namespace autocomplete_text_field {
-
-// Draw gray text suggestion in |controlView|.
-void DrawGrayTextAutocompletion(NSAttributedString* mainText,
-                                NSString* suggestText,
-                                NSColor* suggestColor,
-                                NSView* controlView,
-                                NSRect frame);
-
-}  // namespace autocomplete_text_field
-
 #endif  // CHROME_BROWSER_UI_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_