Add ExceptionHandler to ModuleSystem, remove heap allocated v8::TryCatch.

chrome/renderer/extensions/event_unittest.cc

 // Copyright (c) 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.
 
 #include "chrome/test/base/module_system_test.h"
 
 #include "grit/renderer_resources.h"
 
 namespace extensions {
 namespace {
@@ skipping 133 matching lines @@
 
 TEST_F(EventUnittest, NamedEventDispatch) {
   ModuleSystem::NativesEnabledScope natives_enabled_scope(module_system_.get());
   RegisterModule("test",
       "var event = require('event');"
       "var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();"
       "var assert = requireNative('assert');"
       "var e = new event.Event('myevent');"
       "var called = false;"
       "e.addListener(function() { called = true; });"
-      "chromeHidden.Event.dispatchJSON('myevent', []);"
+      "chromeHidden.Event.dispatchEvent('myevent', []);"
       "assert.AssertTrue(called);");
   module_system_->Require("test");
 }
 
 TEST_F(EventUnittest, AddListenerWithFiltersThrowsErrorByDefault) {
   ModuleSystem::NativesEnabledScope natives_enabled_scope(module_system_.get());
   RegisterModule("test",
       "var event = require('event');"
       "var assert = requireNative('assert');"
       "var e = new event.Event('myevent');"
@@ skipping 103 matching lines @@
       "  e.addListener(cb);"
       "} catch (e) {"
       "  caught = true;"
       "}"
       "assert.AssertTrue(caught);");
   module_system_->Require("test");
 }
 
 }  // namespace
 }  // namespace extensions