Cleanup: Remove an unused variable in chrome_browser_main.cc.

chrome/browser/chrome_browser_main.h

Index: chrome/browser/chrome_browser_main.h
diff --git a/chrome/browser/chrome_browser_main.h b/chrome/browser/chrome_browser_main.h
index aa9d6cc450e473c182a14fcaf3bdae9cb2386397..5d60afa31a3170fd4f472bd91ac23f41634f4b4c 100644
--- a/chrome/browser/chrome_browser_main.h
+++ b/chrome/browser/chrome_browser_main.h
@@ -185,10 +185,6 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
   // Members needed across shutdown methods.
   bool restart_last_session_;
 
-  // Tests can set this to true to disable restricting cookie access in the
-  // network stack, as this can only be done once.
-  static bool disable_enforcing_cookie_policies_for_tests_;
-
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainParts);
 };