Fix double session-restore bug.

chrome/browser/ui/startup/startup_browser_creator_impl.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_STARTUP_STARTUP_BROWSER_CREATOR_IMPL_H_
 #define CHROME_BROWSER_UI_STARTUP_STARTUP_BROWSER_CREATOR_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 80 matching lines @@
 
   // Window behaviors possible when opening Chrome.
   enum class BrowserOpenBehavior {
     NEW,                  // Open in a new browser.
     SYNCHRONOUS_RESTORE,  // Attempt a synchronous session restore.
     USE_EXISTING,         // Attempt to add to an existing tabbed browser.
   };
 
   // Boolean flags used to indicate state for DetermineBrowserOpenBehavior.
   enum BehaviorFlags {
-    PROCESS_STARTUP       = (1 << 0),
-    IS_POST_CRASH_LAUNCH  = (1 << 1),
-    HAS_RESTORE_SWITCH    = (1 << 2),
-    HAS_NEW_WINDOW_SWITCH = (1 << 3),
-    HAS_CMD_LINE_TABS     = (1 << 4),
+    PROCESS_STARTUP = (1 << 0),
+    IS_POST_CRASH_LAUNCH = (1 << 1),
+    HAS_NEW_WINDOW_SWITCH = (1 << 2),
+    HAS_CMD_LINE_TABS = (1 << 3),
   };
 
   using BrowserOpenBehaviorOptions = uint32_t;
 
   // Creates a tab for each of the Tabs in |tabs|. If browser is non-null
   // and a tabbed browser, the tabs are added to it. Otherwise a new tabbed
   // browser is created and the tabs are added to it. The browser the tabs
   // are added to is returned, which is either |browser| or the newly created
   // browser.
   Browser* OpenTabsInBrowser(Browser* browser,
@@ skipping 124 matching lines @@
   const base::FilePath cur_dir_;
   const base::CommandLine& command_line_;
   Profile* profile_;
   StartupBrowserCreator* browser_creator_;
   bool is_first_run_;
   WelcomeRunType welcome_run_type_;
   DISALLOW_COPY_AND_ASSIGN(StartupBrowserCreatorImpl);
 };
 
 #endif  // CHROME_BROWSER_UI_STARTUP_STARTUP_BROWSER_CREATOR_IMPL_H_