Do not show pinned tabs on multiple instances

chrome/browser/ui/startup/startup_tab_provider.h

Index: chrome/browser/ui/startup/startup_tab_provider.h
diff --git a/chrome/browser/ui/startup/startup_tab_provider.h b/chrome/browser/ui/startup/startup_tab_provider.h
index 181ba44b88e59579379e4de027e8401c0156804e..79bf5247a941e996d7b5e41f067807bf1cd6fa6c 100644
--- a/chrome/browser/ui/startup/startup_tab_provider.h
+++ b/chrome/browser/ui/startup/startup_tab_provider.h
@@ -93,8 +93,10 @@ class StartupTabProviderImpl : public StartupTabProvider {
   // Determines whether the startup preference requires the contents of
   // |pinned_tabs| to be shown. This is needed to avoid duplicates, as the
   // session restore logic will also resurface pinned tabs on its own.
-  static StartupTabs GetPinnedTabsForState(const SessionStartupPref& pref,
-                                           const StartupTabs& pinned_tabs);
+  static StartupTabs GetPinnedTabsForState(
+      const SessionStartupPref& pref,
+      const StartupTabs& pinned_tabs,
+      bool profile_has_other_tabbed_browser);
 
   // Determines whether preferences and window state indicate that
   // user-specified tabs should be shown as the default new window content, and