Welcome page changes for Windows 10 and over.

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 12 matching lines @@
 class CommandLine;
 class FilePath;
 }
 
 namespace content {
 class WebContents;
 }
 
 namespace internals {
 GURL GetWelcomePageURL();
-}
+}  // namespace internals
 
 // Assists launching the application and appending the initial tabs for a
 // browser window.
 class StartupBrowserCreatorImpl {
  public:
   // There are two ctors. The first one implies a NULL browser_creator object
   // and thus no access to distribution-specific first-run behaviors. The
   // second one is always called when the browser starts even if it is not
   // the first run.  |is_first_run| indicates that this is a new profile.
   StartupBrowserCreatorImpl(const base::FilePath& cur_dir,
@@ skipping 28 matching lines @@
   // browser.
   Browser* OpenTabsInBrowser(Browser* browser,
                              bool process_startup,
                              const StartupTabs& tabs,
                              chrome::HostDesktopType desktop_type);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, RestorePinnedTabs);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, AppIdSwitch);
 
+  enum class WelcomeRunType {
+    NONE,             // Do not inject the welcome page for this run.
+    FIRST_RUN_FIRST,  // Inject the welcome page as the first first-run tab.
+    FIRST_RUN_LAST,   // Inject the welcome page as the last first-run tab.
+    ANY_RUN_FIRST,    // Inject the welcome page as the first tab.
+  };
+
   // If the process was launched with the web application command line flags,
   // e.g. --app=http://www.google.com/ or --app_id=... return true.
   // In this case |app_url| or |app_id| are populated if they're non-null.
   bool IsAppLaunch(std::string* app_url, std::string* app_id);
 
   // If IsAppLaunch is true, tries to open an application window.
   // If the app is specified to start in a tab, or IsAppLaunch is false,
   // returns false to specify default processing. |out_app_contents| is an
   // optional argument to receive the created WebContents for the app.
   bool OpenApplicationWindow(Profile* profile,
@@ skipping 42 matching lines @@
   void AddUniqueURLs(const std::vector<GURL>& urls, StartupTabs* tabs);
 
   // Adds any startup infobars to the selected tab of the given browser.
   void AddInfoBarsIfNecessary(
       Browser* browser,
       chrome::startup::IsProcessStartup is_process_startup);
 
   // Adds additional startup URLs to the specified vector.
   void AddStartupURLs(std::vector<GURL>* startup_urls) const;
 
-  // Checks whether the Preferences backup is invalid and notifies user in
-  // that case.
-  void CheckPreferencesBackup(Profile* profile);
+  // Initializes |welcome_run_type_| for this launch. Also records that the
+  // welcome page is to be injected for future launches.

[msw, 2015/07/10 22:07:32]

nit: "is to be" or "is not to be"? no joke, won't this prevent future welcomes?

[grt (UTC plus 2), 2015/07/11 12:16:08]

English... I wrote that thinking "...is to be injected on this run for the sake
of decision making on future launches," but that is completely insane. Reworded.

+  void InitializeWelcomeRunType(const std::vector<GURL>& urls_to_open);
 
   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_