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..8470895f2ca8a1d8b7a10fa8a8f00d4cd99af6c7 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
@@ -45,7 +45,8 @@ class WKWebViewConfigurationProvider : public base::SupportsUserData::Data {
   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;
 
@@ -53,6 +54,7 @@ class WKWebViewConfigurationProvider : public base::SupportsUserData::Data {
   base::scoped_nsobject<CRWWKScriptMessageRouter> router_;
   // Result of |web::BrowserState::IsOffTheRecord| call.
   bool is_off_the_record_;
+  BrowserState* browser_state_;
 
   DISALLOW_COPY_AND_ASSIGN(WKWebViewConfigurationProvider);
 };