[ios] Automatically fail any WebTest whose render process crashes.

ios/web/web_state/global_web_state_event_tracker.mm

 // 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.
 
 #include "ios/web/web_state/global_web_state_event_tracker.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/memory/singleton.h"
@@ skipping 21 matching lines @@
   friend class WebStateUserData<WebStateEventForwarder>;
 
   // WebContentsObserver:
   void NavigationItemsPruned(size_t pruned_item_count) override;
   void NavigationItemChanged() override;
   void NavigationItemCommitted(
       const LoadCommittedDetails& load_details) override;
   void DidStartLoading() override;
   void DidStopLoading() override;
   void PageLoaded(PageLoadCompletionStatus load_completion_status) override;
+  void RenderProcessGone() override;
   void WebStateDestroyed() override;
 
   DISALLOW_COPY_AND_ASSIGN(WebStateEventForwarder);
 };
 
 #pragma mark - WebStateEventForwarder
 
 WebStateEventForwarder::WebStateEventForwarder(web::WebState* web_state)
     : WebStateObserver(web_state) {}
 
@@ skipping 23 matching lines @@
   GlobalWebStateEventTracker::GetInstance()->WebStateDidStopLoading(
       web_state());
 }
 
 void WebStateEventForwarder::PageLoaded(
     PageLoadCompletionStatus load_completion_status) {
   GlobalWebStateEventTracker::GetInstance()->PageLoaded(web_state(),
                                                         load_completion_status);
 }
 
+void WebStateEventForwarder::RenderProcessGone() {
+  GlobalWebStateEventTracker::GetInstance()->RenderProcessGone(web_state());
+}
+
 void WebStateEventForwarder::WebStateDestroyed() {
   GlobalWebStateEventTracker::GetInstance()->WebStateDestroyed(web_state());
 }
 
 #pragma mark - GlobalWebStateEventTracker
 
 GlobalWebStateEventTracker* GlobalWebStateEventTracker::GetInstance() {
   return base::Singleton<GlobalWebStateEventTracker>::get();
 }
 
@@ skipping 43 matching lines @@
     observer.WebStateDidStopLoading(web_state);
 }
 
 void GlobalWebStateEventTracker::PageLoaded(
     WebState* web_state,
     PageLoadCompletionStatus load_completion_status) {
   for (auto& observer : observer_list_)
     observer.PageLoaded(web_state, load_completion_status);
 }
 
+void GlobalWebStateEventTracker::RenderProcessGone(WebState* web_state) {
+  for (auto& observer : observer_list_)
+    observer.RenderProcessGone(web_state);
+}
+
 void GlobalWebStateEventTracker::WebStateDestroyed(WebState* web_state) {
   for (auto& observer : observer_list_)
     observer.WebStateDestroyed(web_state);
 }
 
 }  // namespace web