Let Flash join and be controlled by media session

content/browser/web_contents/web_contents_impl.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/browser/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 3682 matching lines @@
 // This exists for render views that don't have a WebUI, but do have WebUI
 // bindings enabled.
 void WebContentsImpl::OnWebUISend(const GURL& source_url,
                                   const std::string& name,
                                   const base::ListValue& args) {
   if (delegate_)
     delegate_->WebUISend(this, source_url, name, args);
 }
 
 #if defined(ENABLE_PLUGINS)
-void WebContentsImpl::OnPepperInstanceCreated() {
-  FOR_EACH_OBSERVER(WebContentsObserver, observers_, PepperInstanceCreated());
+void WebContentsImpl::OnPepperInstanceCreated(int32_t pp_instance) {
+  FOR_EACH_OBSERVER(WebContentsObserver, observers_,
+                    PepperInstanceCreated(pp_instance));
 }
 
-void WebContentsImpl::OnPepperInstanceDeleted() {
-  FOR_EACH_OBSERVER(WebContentsObserver, observers_, PepperInstanceDeleted());
+void WebContentsImpl::OnPepperInstanceDeleted(int32_t pp_instance) {
+  FOR_EACH_OBSERVER(WebContentsObserver, observers_,
+                    PepperInstanceDeleted(pp_instance));
 }
 
 void WebContentsImpl::OnPepperPluginHung(int plugin_child_id,
                                          const base::FilePath& path,
                                          bool is_hung) {
   UMA_HISTOGRAM_COUNTS("Pepper.PluginHung", 1);
 
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     PluginHungStatusChanged(plugin_child_id, path, is_hung));
 }
@@ skipping 1407 matching lines @@
   for (RenderViewHost* render_view_host : render_view_host_set)
     render_view_host->OnWebkitPreferencesChanged();
 }
 
 void WebContentsImpl::SetJavaScriptDialogManagerForTesting(
     JavaScriptDialogManager* dialog_manager) {
   dialog_manager_ = dialog_manager;
 }
 
 }  // namespace content