Remove all support for the Carbon NPAPI event model

content/renderer/webplugin_delegate_proxy.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 "content/renderer/webplugin_delegate_proxy.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #elif defined(USE_X11)
 #include <cairo/cairo.h>
@@ skipping 1164 matching lines @@
       caret_rect, WebKit::WebTextDirectionLeftToRight,
       caret_rect, WebKit::WebTextDirectionLeftToRight));
 }
 #endif
 
 void WebPluginDelegateProxy::OnCancelResource(int id) {
   if (plugin_)
     plugin_->CancelResource(id);
 }
 
-void WebPluginDelegateProxy::OnInvalidateRect(const gfx::Rect& rect,
-                                              bool allow_buffer_flipping) {
+void WebPluginDelegateProxy::OnInvalidateRect(const gfx::Rect& rect) {
   if (!plugin_)
     return;
 
   // Clip the invalidation rect to the plugin bounds; the plugin may have been
   // resized since the invalidate message was sent.
   const gfx::Rect clipped_rect(rect.Intersect(gfx::Rect(plugin_rect_.size())));
 
   invalidate_pending_ = true;
   // The plugin is blocked on the renderer because the invalidate message it has
   // sent us is synchronous, so we can use buffer flipping here if the caller
   // allows it.
-  UpdateFrontBuffer(clipped_rect, allow_buffer_flipping);
+  UpdateFrontBuffer(clipped_rect, true);
   plugin_->InvalidateRect(clipped_rect);
 }
 
 void WebPluginDelegateProxy::OnGetWindowScriptNPObject(
     int route_id, bool* success) {
   *success = false;
   NPObject* npobject = NULL;
   if (plugin_)
     npobject = plugin_->GetWindowScriptNPObject();
 
@@ skipping 319 matching lines @@
 }
 #endif
 
 void WebPluginDelegateProxy::OnURLRedirectResponse(bool allow,
                                                    int resource_id) {
   if (!plugin_)
     return;
 
   plugin_->URLRedirectResponse(allow, resource_id);
 }