Add a BrowserState* parameter to GetEarlyPageScript().

ios/web/web_state/ui/wk_web_view_configuration_provider.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IOS_WEB_WEB_STATE_UI_WK_WEB_VIEW_CONFIGURATION_PROVIDER_H_
 #define IOS_WEB_WEB_STATE_UI_WK_WEB_VIEW_CONFIGURATION_PROVIDER_H_
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
 #include "base/supports_user_data.h"
@@ skipping 27 matching lines @@
   // Lazily creates the router. Callers must not retain the returned object
   // (this will be enforced in debug builds).
   CRWWKScriptMessageRouter* GetScriptMessageRouter();
 
   // Purges config and router objects if they exist. When this method is called
   // config and config's process pool must not be retained by anyone (this will
   // be enforced in debug builds).
   void Purge();
 
  private:
-  explicit WKWebViewConfigurationProvider(bool is_off_the_record);
+  explicit WKWebViewConfigurationProvider(bool is_off_the_record,

[Eugene But (OOO till 7-30), 2017/03/16 16:12:40]

No need to pass |is_off_the_record| flag anymore and have |is_off_the_record_|.
Just use BrowserState::IsOffTheRecord() method inside.

[Hiroshi Ichikawa, 2017/03/17 06:09:24]

Good point. Done.

+                                          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);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_WEB_STATE_UI_WK_WEB_VIEW_CONFIGURATION_PROVIDER_H_