Tabs API is usable without tabs permission.

chrome/browser/extensions/extension_tab_util.cc

 // Copyright (c) 2012 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/extensions/extension_tab_util.h"
 
 #include "chrome/browser/extensions/api/tabs/tabs_constants.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/browser/extensions/window_controller.h"
 #include "chrome/browser/net/url_fixer_upper.h"
@@ skipping 113 matching lines @@
 }
 
 DictionaryValue* ExtensionTabUtil::CreateTabValueActive(
     const WebContents* contents,
     bool active) {
   DictionaryValue* result = ExtensionTabUtil::CreateTabValue(contents);
   result->SetBoolean(keys::kSelectedKey, active);
   return result;
 }
 
+void ExtensionTabUtil::StripTabOfSensitiveData(DictionaryValue* tab) {
+  if (tab->HasKey(keys::kUrlKey))
+    tab->SetString(keys::kUrlKey, std::string());
+  if (tab->HasKey(keys::kTitleKey))
+    tab->SetString(keys::kTitleKey, std::string());
+  if (tab->HasKey(keys::kFaviconUrlKey))
+    tab->SetString(keys::kFaviconUrlKey, std::string());
+}
+
 bool ExtensionTabUtil::GetTabStripModel(const WebContents* web_contents,
                                         TabStripModel** tab_strip_model,
                                         int* tab_index) {
   DCHECK(web_contents);
   DCHECK(tab_strip_model);
   DCHECK(tab_index);
 
   for (BrowserList::const_iterator it = BrowserList::begin();
       it != BrowserList::end(); ++it) {
     TabStripModel* tab_strip = (*it)->tab_strip_model();
@@ skipping 119 matching lines @@
 
 // static
 extensions::WindowController* ExtensionTabUtil::GetWindowControllerOfTab(
     const WebContents* web_contents) {
   Browser* browser = browser::FindBrowserWithWebContents(web_contents);
   if (browser != NULL)
     return browser->extension_window_controller();
 
   return NULL;
 }