Remove WebDocument::createEvent.

components/plugins/renderer/loadable_plugin_placeholder.cc

 // Copyright 2015 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 "components/plugins/renderer/loadable_plugin_placeholder.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/json/string_escape.h"
@@ skipping 268 matching lines @@
           switches::kEnablePluginPlaceholderTesting)) {
     blink::WebElement element = plugin()->container()->element();
     element.setAttribute("placeholderLoaded", "true");
 
     scoped_ptr<content::V8ValueConverter> converter(
         content::V8ValueConverter::create());
     base::StringValue value("placeholderLoaded");
     blink::WebSerializedScriptValue message_data =
         blink::WebSerializedScriptValue::serialize(converter->ToV8Value(
             &value, element.document().frame()->mainWorldScriptContext()));
-
-    blink::WebDOMEvent event = element.document().createEvent("MessageEvent");
-    blink::WebDOMMessageEvent msg_event = event.to<blink::WebDOMMessageEvent>();
-    msg_event.initMessageEvent("message",           // type
-                               false,               // canBubble
-                               false,               // cancelable
-                               message_data,        // data
-                               "",                  // origin [*]
-                               NULL,                // source [*]
-                               element.document(),  // target document
-                               "");                 // lastEventId
+    blink::WebDOMMessageEvent msg_event(message_data);
     element.dispatchEvent(msg_event);
   }
 }
 
 void LoadablePluginPlaceholder::SetPluginInfo(
     const content::WebPluginInfo& plugin_info) {
   plugin_info_ = plugin_info;
 }
 
 const content::WebPluginInfo& LoadablePluginPlaceholder::GetPluginInfo() const {
@@ skipping 43 matching lines @@
           roundf(unobscured_rect_.width() / zoom_factor),
           roundf(unobscured_rect_.height() / zoom_factor))) {
     MarkPluginEssential(
         PluginInstanceThrottler::UNTHROTTLE_METHOD_BY_SIZE_CHANGE);
   }
 
   in_size_recheck_ = false;
 }
 
 }  // namespace plugins