Speculative fix for crash in DOMUIThumbnailSource.

chrome/browser/dom_ui/dom_ui_theme_source.cc

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// 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.
 
 #include "chrome/browser/dom_ui/dom_ui_theme_source.h"
 
 #include "app/resource_bundle.h"
 #include "app/theme_provider.h"
 #include "base/message_loop.h"
+#include "base/ref_counted_memory.h"
 #include "chrome/browser/browser_theme_provider.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/dom_ui/ntp_resource_cache.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/resources_util.h"
 #include "chrome/common/url_constants.h"
 #include "googleurl/src/gurl.h"
 
 // use a resource map rather than hard-coded strings.
 static const char* kNewTabCSSPath = "css/newtab.css";
 static const char* kNewIncognitoTabCSSPath = "css/newincognitotab.css";
 
 static std::string StripQueryParams(const std::string& path) {
   GURL path_url = GURL(std::string(chrome::kChromeUIScheme) + "://" +
                        std::string(chrome::kChromeUIThemePath) + "/" + path);
   return path_url.path().substr(1);  // path() always includes a leading '/'.
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // DOMUIThemeSource, public:
 
 DOMUIThemeSource::DOMUIThemeSource(Profile* profile)
     : DataSource(chrome::kChromeUIThemePath, MessageLoop::current()),
       profile_(profile->GetOriginalProfile()) {
   css_bytes_ = profile_->GetNTPResourceCache()->GetNewTabCSS(
       profile->IsOffTheRecord());
 }
 
+DOMUIThemeSource::~DOMUIThemeSource() {
+}
+
 void DOMUIThemeSource::StartDataRequest(const std::string& path,
                                         bool is_off_the_record,
                                         int request_id) {
   // Our path may include cachebuster arguments, so trim them off.
   std::string uncached_path = StripQueryParams(path);
 
   if (uncached_path == kNewTabCSSPath ||
       uncached_path == kNewIncognitoTabCSSPath) {
     DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
     DCHECK((uncached_path == kNewTabCSSPath && !is_off_the_record) ||
@@ skipping 52 matching lines @@
     DCHECK(tp);
 
     scoped_refptr<RefCountedMemory> image_data(tp->GetRawData(resource_id));
     SendResponse(request_id, image_data);
   } else {
     DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
     const ResourceBundle& rb = ResourceBundle::GetSharedInstance();
     SendResponse(request_id, rb.LoadDataResourceBytes(resource_id));
   }
 }