[DevTools] Fill ExceptionDetails with more details, unify usage across protocol.

chrome/test/data/extensions/api_test/uncaught_exception_logging/test.js

 // 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.
 
 function createTestFunction(expected_message) {
   return function(tab) {
     function onDebuggerEvent(debuggee, method, params) {
       if (debuggee.tabId == tab.id && method == 'Runtime.exceptionThrown') {
-        if (params.exception.value.indexOf(expected_message) > -1) {
+        var exception = params.exceptionDetails.exception;
+        if (exception.value.indexOf(expected_message) > -1) {
           chrome.debugger.onEvent.removeListener(onDebuggerEvent);
           chrome.test.succeed();
         }
       }
     };
     chrome.debugger.onEvent.addListener(onDebuggerEvent);
     chrome.debugger.attach({ tabId: tab.id }, "1.1", function() {
       // Enabling console provides both stored and new messages via the
       // Console.messageAdded event.
       chrome.debugger.sendCommand({ tabId: tab.id }, "Runtime.enable");
@@ skipping 20 matching lines @@
 
     chrome.test.getConfig(function(config) {
       var test_url =
           'http://localhost:PORT/extensions/test_file.html'
               .replace(/PORT/, config.testServer.port);
 
       chrome.tabs.create({ url: test_url }, injectScriptAndSendMessage);
     });
   }
 ]);