[Mac] Convert Omnibox paste-and-go to use AutocompleteTextFieldObserver.

chrome/browser/cocoa/autocomplete_text_field.mm

 // Copyright (c) 2009 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/cocoa/autocomplete_text_field.h"
 
 #include "base/logging.h"
 #include "chrome/browser/cocoa/autocomplete_text_field_cell.h"
 
 @implementation AutocompleteTextField
 
 @synthesize observer = observer_;
 
 + (Class)cellClass {
   return [AutocompleteTextFieldCell class];
 }
 
 - (void)awakeFromNib {
   DCHECK([[self cell] isKindOfClass:[AutocompleteTextFieldCell class]]);
 }
 
-- (NSString*)textPasteActionString:(NSText*)fieldEditor {
-  id delegate = [self delegate];
-  if ([delegate respondsToSelector:@selector(control:textPasteActionString:)]) {
-    return [delegate control:self textPasteActionString:fieldEditor];
-  }
-  return nil;
-}
-
-- (void)textDidPasteAndGo:(NSText*)fieldEditor {
-  id delegate = [self delegate];
-  if ([delegate respondsToSelector:@selector(control:textDidPasteAndGo:)]) {
-    [delegate control:self textDidPasteAndGo:fieldEditor];
-  }
-}
-
 - (void)flagsChanged:(NSEvent*)theEvent {
   bool controlFlag = ([theEvent modifierFlags]&NSControlKeyMask) != 0;
   observer_->OnControlKeyChanged(controlFlag);
 }
 
 - (AutocompleteTextFieldCell*)autocompleteTextFieldCell {
   DCHECK([[self cell] isKindOfClass:[AutocompleteTextFieldCell class]]);
   return static_cast<AutocompleteTextFieldCell*>([self cell]);
 }
 
@@ skipping 104 matching lines @@
   // field editor to the end of the content so that the selection
   // doesn't initiate from somewhere in the middle of the text.
   if (location.x > NSMaxX(textFrame)) {
     [editor scrollRangeToVisible:NSMakeRange([[self stringValue] length], 0)];
   }
 
   [editor mouseDown:theEvent];
 }
 
 @end