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

ios/web/web_state/ui/crw_web_controller_unittest.mm

 // Copyright 2012 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.
 
 #import "ios/web/web_state/ui/crw_web_controller.h"
 
 #import <WebKit/WebKit.h>
 
 #include <utility>
 
@@ skipping 995 matching lines @@
 class CRWWebControllerWebProcessTest : public web::WebTestWithWebController {
  protected:
   void SetUp() override {
     web::WebTestWithWebController::SetUp();
     webView_.reset([web::BuildTerminatedWKWebView() retain]);
     base::scoped_nsobject<TestWebViewContentView> webViewContentView(
         [[TestWebViewContentView alloc]
             initWithMockWebView:webView_
                      scrollView:[webView_ scrollView]]);
     [web_controller() injectWebViewContentView:webViewContentView];
+
+    // This test intentionally crashes the render process.
+    SetIgnoreRenderProcessCrashesDuringTesting(true);
   }
   base::scoped_nsobject<WKWebView> webView_;
 };
 
 // Tests that WebStateDelegate::RenderProcessGone is called when WKWebView web
 // process has crashed.
 TEST_F(CRWWebControllerWebProcessTest, Crash) {
   // Observes and waits for RenderProcessGone call.
   class RenderProcessGoneObserver : public web::WebStateObserver {
    public:
@@ skipping 12 matching lines @@
   };
 
   RenderProcessGoneObserver observer(web_state());
   web::SimulateWKWebViewCrash(webView_);
   observer.WaitForRenderProcessGone();
 
   EXPECT_FALSE([web_controller() isViewAlive]);
 };
 
 }  // namespace