[Mac] Handle shift-delete when omnibox popup is up.

chrome/browser/autocomplete/autocomplete_edit_view_mac.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/autocomplete/autocomplete_edit_view_mac.h"
 
 #include <Carbon/Carbon.h>  // kVK_Return
 #include "app/gfx/font.h"
 #include "app/resource_bundle.h"
 #include "base/clipboard.h"
@@ skipping 635 matching lines @@
   // We're showing a keyword and the user pressed backspace at the
   // beginning of the text.  Delete the selected keyword.
   model_->ClearKeyword(GetText());
   return true;
 }
 
 bool AutocompleteEditViewMac::IsPopupOpen() const {
   return popup_view_->IsOpen();
 }
 
+void AutocompleteEditViewMac::TryDeletingCurrentItem() {
+  popup_view_->GetModel()->TryDeletingCurrentItem();
+}
+
 void AutocompleteEditViewMac::OnControlKeyChanged(bool pressed) {
   model_->OnControlKeyChanged(pressed);
 }
 
 void AutocompleteEditViewMac::AcceptInput(
     WindowOpenDisposition disposition, bool for_drop) {
   model_->AcceptInput(disposition, for_drop);
 }
 
 void AutocompleteEditViewMac::FocusLocation() {
@@ skipping 109 matching lines @@
     edit_view_->AcceptInput(disposition, false);
     return YES;
   }
 
   if (cmd == @selector(deleteBackward:)) {
     if (edit_view_->OnBackspacePressed()) {
       return YES;
     }
   }
 
+  if (cmd == @selector(deleteForward:)) {
+    const NSUInteger modifiers = [[NSApp currentEvent] modifierFlags];
+    if ((modifiers & NSShiftKeyMask) != 0) {
+      if (edit_view_->IsPopupOpen()) {
+        edit_view_->TryDeletingCurrentItem();
+        return YES;
+      }
+    }
+  }
+
   // Capture the state before the operation changes the content.
   // TODO(shess): Determine if this is always redundent WRT the call
   // in -controlTextDidChange:.
   edit_view_->OnBeforePossibleChange();
   return NO;
 }
 
 - (void)controlTextDidBeginEditing:(NSNotification*)aNotification {
   edit_view_->OnWillBeginEditing();
 }
@@ skipping 36 matching lines @@
 // prepended and ".com" appended.  This calls down to
 // AutocompleteEditModel::OnControlKeyChanged() so that it can change
 // the popup to reflect this.  See autocomplete_edit.cc
 // OnControlKeyChanged() and OnAfterPossibleChange().
 - (void)control:(NSControl*)control flagsChanged:(NSEvent*)theEvent {
   BOOL controlFlag = ([theEvent modifierFlags]&NSControlKeyMask) != 0;
   edit_view_->OnControlKeyChanged(controlFlag);
 }
 
 @end