Add a BrowserState* parameter to GetEarlyPageScript().

ios/web/web_state/ui/wk_web_view_configuration_provider.h

Index: ios/web/web_state/ui/wk_web_view_configuration_provider.h
diff --git a/ios/web/web_state/ui/wk_web_view_configuration_provider.h b/ios/web/web_state/ui/wk_web_view_configuration_provider.h
index 84191f74ab00bb77772d945a84312f46c7b3e87b..d85ad22d36c4685fc399eddbd2725da8508d6b9a 100644
--- a/ios/web/web_state/ui/wk_web_view_configuration_provider.h
+++ b/ios/web/web_state/ui/wk_web_view_configuration_provider.h
@@ -45,14 +45,13 @@ class WKWebViewConfigurationProvider : public base::SupportsUserData::Data {
   void Purge();
 
  private:
-  explicit WKWebViewConfigurationProvider(bool is_off_the_record);
+  explicit WKWebViewConfigurationProvider(BrowserState* browser_state);
   WKWebViewConfigurationProvider() = delete;
   ~WKWebViewConfigurationProvider() override;
 
   base::scoped_nsobject<WKWebViewConfiguration> configuration_;
   base::scoped_nsobject<CRWWKScriptMessageRouter> router_;
-  // Result of |web::BrowserState::IsOffTheRecord| call.
-  bool is_off_the_record_;
+  BrowserState* browser_state_;
 
   DISALLOW_COPY_AND_ASSIGN(WKWebViewConfigurationProvider);
 };