Revert r46023: "Detect new instance of the browser when running in the background in persistent"

chrome/browser/first_run_win.cc

Index: chrome/browser/first_run_win.cc
diff --git a/chrome/browser/first_run_win.cc b/chrome/browser/first_run_win.cc
index 86a79e55ed3911f33e7a30c1cf93d984092d9d0a..cc34dc1814b8edab3a9a4c08de98ae3629862abb 100644
--- a/chrome/browser/first_run_win.cc
+++ b/chrome/browser/first_run_win.cc
@@ -205,8 +205,6 @@ class FirsRunDelayedTasks : public NotificationObserver {
 
 }  // namespace
 
-CommandLine* Upgrade::new_command_line_ = NULL;
-
 bool FirstRun::CreateChromeDesktopShortcut() {
   std::wstring chrome_exe;
   if (!PathService::Get(base::FILE_EXE, &chrome_exe))
@@ -412,18 +410,6 @@ bool Upgrade::RelaunchChromeBrowser(const CommandLine& command_line) {
                          false, false, NULL);
 }
 
-void Upgrade::RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
-  if (new_command_line_) {
-    if (RelaunchChromeBrowser(*new_command_line_)) {
-      DLOG(ERROR) << "Launching a new instance of the browser failed.";
-    } else {
-      DLOG(WARNING) << "Launched a new instance of the browser.";
-    }
-    delete new_command_line_;
-    new_command_line_ = NULL;
-  }
-}
-
 bool Upgrade::SwapNewChromeExeIfPresent() {
   std::wstring new_chrome_exe;
   if (!GetNewerChromeFile(&new_chrome_exe))
@@ -1034,3 +1020,4 @@ Upgrade::TryResult Upgrade::ShowTryChromeDialog(size_t version) {
   TryChromeDialog td;
   return td.ShowModal();
 }
+