Adding a privileged callback used in IE CF to check whether to show...

ceee/ie/plugin/toolband/tool_band.cc

 // Copyright (c) 2010 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.
 //
 // IE toolband implementation.
 #include "ceee/ie/plugin/toolband/tool_band.h"
 
 #include <atlsafe.h>
 #include <atlstr.h>
 #include <shlguid.h>
@@ skipping 216 matching lines @@
   *profile_name = ::SysAllocString(
       ceee_module_util::GetBrokerProfileNameForIe());
   return S_OK;
 }
 
 STDMETHODIMP ToolBand::GetExtensionApisToAutomate(BSTR* functions_enabled) {
   *functions_enabled = NULL;
   return S_FALSE;
 }
 
+STDMETHODIMP ToolBand::ShouldShowVersionMismatchDialog() {
+  // Only the toolband shows the warning dialog, meaning it gets shown once
+  // per tab.
+  return S_OK;
+}
+
 HRESULT ToolBand::Initialize(IUnknown* site) {
   TRACE_EVENT_INSTANT("ceee.toolband.initialize", this, "");
 
   CComQIPtr<IServiceProvider> service_provider = site;
   DCHECK(service_provider);
   if (service_provider == NULL) {
     return E_FAIL;
   }
 
   HRESULT hr = InitializeAndShowWindow(site);
@@ skipping 372 matching lines @@
   return own_line_flag_;
 }
 
 void ToolBand::ClearForceOwnLineFlag() {
   if (own_line_flag_ || !already_checked_own_line_flag_) {
     own_line_flag_ = false;
     already_checked_own_line_flag_ = true;
     ceee_module_util::SetOptionToolbandForceReposition(false);
   }
 }