Modified the browser controller so that it can revert...

chrome/browser/cocoa/browser_window_controller.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 <Carbon/Carbon.h>
 
 #include "base/mac_util.h"
 #include "base/scoped_nsdisable_screen_updates.h"
 #import "base/scoped_nsobject.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/app/chrome_dll_resource.h"  // IDC_*
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/encoding_menu_controller.h"
+#include "chrome/browser/location_bar.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #import "chrome/browser/cocoa/bookmark_bar_controller.h"
 #import "chrome/browser/cocoa/browser_window_cocoa.h"
 #import "chrome/browser/cocoa/browser_window_controller.h"
 #import "chrome/browser/cocoa/download_shelf_controller.h"
 #import "chrome/browser/cocoa/find_bar_cocoa_controller.h"
@@ skipping 427 matching lines @@
   }
   return enable;
 }
 
 // Called when the user picks a menu or toolbar item when this window is key.
 // Calls through to the browser object to execute the command. This assumes that
 // the command is supported and doesn't check, otherwise it would have been
 // disabled in the UI in validateUserInterfaceItem:.
 - (void)commandDispatch:(id)sender {
   NSInteger tag = [sender tag];
+  switch (tag) {
+    case IDC_FORWARD:
+    case IDC_BACK:
+      [self locationBar]->Revert();
+      break;
+    case IDC_RELOAD:
+      if ([sender isKindOfClass:[NSButton class]]) {
+        // We revert the bar when the reload button is pressed, but don't when
+        // Command+r is pressed (Issue 15464). Unlike the event handler function
+        // for Windows (ToolbarView::ButtonPressed()), this function handles
+        // both reload button press event and Command+r press event. Thus the
+        // 'isKindofClass' check is necessary.
+        [self locationBar]->Revert();
+      }
+      break;
+  }
   browser_->ExecuteCommand(tag);
 }
 
 // Called when another part of the internal codebase needs to execute a
 // command.
 - (void)executeCommand:(int)command {
   if (browser_->command_updater()->IsCommandEnabled(command))
     browser_->ExecuteCommand(command);
 }
 
@@ skipping 696 matching lines @@
   NSColor* toolbarButtonBorderColor = toolbarButtonIconColor;
   [theme setValue:toolbarButtonBorderColor
      forAttribute:@"borderColor"
             style:GTMThemeStyleToolBar
             state:YES];
 
   return theme;
 }
 @end