Make session restore understand that tabs have multiple SessionStorageNamespaces.

chrome/browser/sessions/session_restore_browsertest.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 "base/command_line.h"
 #include "base/file_path.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/first_run/first_run.h"
@@ skipping 755 matching lines @@
   ASSERT_EQ(2, new_browser->tab_count());
   EXPECT_EQ(0, new_browser->active_index());
   EXPECT_EQ(url1_, chrome::GetActiveWebContents(new_browser)->GetURL());
   EXPECT_EQ(url2_, chrome::GetWebContentsAt(new_browser, 1)->GetURL());
 }
 
 IN_PROC_BROWSER_TEST_F(SessionRestoreTest, SessionStorage) {
   ui_test_utils::NavigateToURL(browser(), url1_);
   const content::NavigationController& controller =
       chrome::GetActiveWebContents(browser())->GetController();
-  ASSERT_TRUE(controller.GetSessionStorageNamespaceMap().find("")->second);
-  std::string session_storage_persistent_id =
-      controller.GetSessionStorageNamespaceMap().find("")
-          ->second->persistent_id();
+  const content::SessionStorageNamespaceMap& session_storage_namspace_map =
+      controller.GetSessionStorageNamespaceMap();
+  ASSERT_TRUE(!session_storage_namspace_map.empty());
+  std::map<std::string, std::string> expected_persistent_ids;
+  for (content::SessionStorageNamespaceMap::const_iterator it =
+           session_storage_namspace_map.begin();
+       it != session_storage_namspace_map.end();
+       ++it) {
+    expected_persistent_ids[it->first] = it->second->persistent_id();
+  }
+
   Browser* new_browser = QuitBrowserAndRestore(browser(), 1);
   ASSERT_EQ(1u, BrowserList::size());
   ASSERT_EQ(url1_, chrome::GetActiveWebContents(new_browser)->GetURL());
+
   const content::NavigationController& new_controller =
       chrome::GetActiveWebContents(new_browser)->GetController();
-  ASSERT_TRUE(new_controller.GetSessionStorageNamespaceMap().find("")->second);
-  std::string restored_session_storage_persistent_id =
-      new_controller.GetSessionStorageNamespaceMap().find("")
-          ->second->persistent_id();
-  EXPECT_EQ(session_storage_persistent_id,
-            restored_session_storage_persistent_id);
+
+  const content::SessionStorageNamespaceMap& restored_storage_namespace_map =
+      new_controller.GetSessionStorageNamespaceMap();
+  ASSERT_TRUE(!restored_storage_namespace_map.empty());
+  for (content::SessionStorageNamespaceMap::const_iterator it =
+          restored_storage_namespace_map.begin();
+       it != restored_storage_namespace_map.end();
+       ++it) {
+    EXPECT_EQ(expected_persistent_ids[it->first], it->second->persistent_id())
+        << " for storage partition --" << it->first << "--";
+  }
 }