Welcome page changes for Windows 10 and over.

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index b1cfe0b6d89997f4e84d4136827d74d16974ed71..c35b9993186f761654d7812177cc14eb7a62525c 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -988,6 +988,11 @@ int ChromeBrowserMainParts::PreCreateThreadsImpl() {
       // when this value will be updated.
       local_state_->SetInt64(prefs::kVariationsSeedDate,
                              base::Time::Now().ToInternalValue());
+
+#if defined(OS_WIN)
+      if (!master_prefs_->welcome_page_on_os_upgrade_enabled)
+        local_state_->SetBoolean(prefs::kWelcomePageOnOSUpgradeEnabled, false);
+#endif
     }
 
     if (!master_prefs_->suppress_default_browser_prompt_for_version.empty()) {