Notify CloseFile from Pepper to FileSystem.

content/renderer/pepper/pepper_plugin_delegate_impl.cc

Index: content/renderer/pepper/pepper_plugin_delegate_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_delegate_impl.cc b/content/renderer/pepper/pepper_plugin_delegate_impl.cc
index 0a30831cb9579dad251ccd12617d4eeee39d67bd..fcf0ee1fd738d1fdb3adcc15c1c23df5aac5c423 100644
--- a/content/renderer/pepper/pepper_plugin_delegate_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_delegate_impl.cc
@@ -193,6 +193,8 @@ class PluginInstanceLockTarget : public MouseLockDispatcher::LockTarget {
   webkit::ppapi::PluginInstance* plugin_;
 };
 
+void DoNothing() {}
+
 }  // namespace
 
 PepperPluginDelegateImpl::PepperPluginDelegateImpl(RenderViewImpl* render_view)
@@ -912,6 +914,20 @@ bool PepperPluginDelegateImpl::AsyncOpenFileSystemURL(
       new AsyncOpenFileSystemURLCallbackTranslator(callback));
 }
 
+bool PepperPluginDelegateImpl::AsyncNotifyCloseFileSystemURL(const GURL& path) {
+  // Schedule the notification task in the file thread, to make sure that the
+  // actual close operation has finished.
+  return GetFileThreadMessageLoopProxy()->PostTaskAndReply(
+      FROM_HERE,
+      base::Bind(&DoNothing),
+      base::Bind(&PepperPluginDelegateImpl::DoNotifyCloseFile,
+                 AsWeakPtr(), path));

[kinuko, 2012/06/13 06:38:29]

What happens if the plugin goes away before this is handled?

[kinaba, 2012/06/25 11:14:02]

PepperPluginDelegateImpl is associated with a renderer, so as long as renderrer
is alive, DoNotifyCloseFile() is called (no matter where plugin goes). For the
case when renderer is dead, I added a detection code to FileAPIMessageFilter.

+}
+
+void PepperPluginDelegateImpl::DoNotifyCloseFile(const GURL& path) {
+  ChildThread::current()->file_system_dispatcher()->NotifyCloseFile(path);
+}
+
 base::PlatformFileError PepperPluginDelegateImpl::OpenFile(
     const ppapi::PepperFilePath& path,
     int flags,