Add test for CHECK exit code behavior.

content/renderer/render_frame_impl.cc

 // Copyright 2013 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 "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 529 matching lines @@
     }
   } else if (url == kChromeUIShorthangURL) {
     LOG(ERROR) << "Intentionally sleeping renderer for 20 seconds"
                << " because user navigated to " << url.spec();
     base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(20));
   } else if (url == kChromeUIMemoryExhaustURL) {
     LOG(ERROR)
         << "Intentionally exhausting renderer memory because user navigated to "
         << url.spec();
     ExhaustMemory();
+  } else if (url == kChromeUICheckCrashURL) {
+    LOG(ERROR)
+        << "Intentionally causing CHECK because user navigated to "
+        << url.spec();
+    CHECK(false);
   }
 
 #if defined(ADDRESS_SANITIZER) || defined(SYZYASAN)
   MaybeTriggerAsanError(url);
 #endif  // ADDRESS_SANITIZER || SYZYASAN
 }
 
 // Returns false unless this is a top-level navigation.
 bool IsTopLevelNavigation(WebFrame* frame) {
   return frame->parent() == NULL;
@@ skipping 6290 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content