[headless] Fix headless_shell compilation.

headless/app/headless_shell.cc

 // Copyright 2016 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 <iostream>
 #include <memory>
 #include <string>
 
 #include "base/base64.h"
 #include "base/bind.h"
@@ skipping 191 matching lines @@
     }
   }
 
   void FetchDom() {
     devtools_client_->GetRuntime()->Evaluate(
         "document.body.innerHTML",
         base::Bind(&HeadlessShell::OnDomFetched, base::Unretained(this)));
   }
 
   void OnDomFetched(std::unique_ptr<runtime::EvaluateResult> result) {
-    if (result->GetWasThrown()) {
+    if (result->GetExceptionDetails()) {
       LOG(ERROR) << "Failed to evaluate document.body.innerHTML";
     } else {
       std::string dom;
       if (result->GetResult()->GetValue()->GetAsString(&dom)) {
         std::cout << dom << std::endl;
       }
     }
     Shutdown();
   }
 
@@ skipping 184 matching lines @@
       LOG(ERROR) << "Malformed window size";
       return EXIT_FAILURE;
     }
     builder.SetWindowSize(parsed_window_size);
   }
 
   return HeadlessBrowserMain(
       builder.Build(),
       base::Bind(&HeadlessShell::OnStart, base::Unretained(&shell)));
 }