Replaced webControllerWebProcessDidCrash: with RenderProcessGone.

ios/web/public/web_state/web_state_observer.h

 // Copyright 2014 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_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 64 matching lines @@
   // there is any error when parsing the form field information.
   virtual void FormActivityRegistered(const std::string& form_name,
                                       const std::string& field_name,
                                       const std::string& type,
                                       const std::string& value,
                                       bool input_missing) {}
 
   // Invoked when new favicon URL candidates are received.
   virtual void FaviconUrlUpdated(const std::vector<FaviconURL>& candidates) {}
 
+  // Called when the web process is terminated (usually by crashing, though
+  // possibly by other means).
+  virtual void RenderProcessGone() {}
+
   // Notifies the observer that the credential manager API was invoked from
   // |source_url| to request a credential from the browser. If |unmediated|
   // is true, the browser MUST NOT show any UI to the user. If this means that
   // no credential will be returned to the page, so be it. Otherwise, the
   // browser may show the user any UI that is necessary to get a Credential and
   // return it to the page. |federations| specifies a list of acceptable
   // federation providers. |user_interaction| indicates whether the API was
   // invoked in response to a user interaction. Responses to the page should
   // provide the specified |request_id|.
   virtual void CredentialsRequested(int request_id,
@@ skipping 62 matching lines @@
   void ResetWebState();
 
   WebState* web_state_;
 
   DISALLOW_COPY_AND_ASSIGN(WebStateObserver);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_H_