Add events for configuring and adding new providers to FSP API.

chrome/browser/chromeos/file_system_provider/service.cc

 // Copyright 2014 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/browser/chromeos/file_system_provider/service.h"
 
 #include "base/files/file_path.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/stl_util.h"
+#include "base/values.h"
 #include "chrome/browser/chromeos/file_system_provider/mount_path_util.h"
 #include "chrome/browser/chromeos/file_system_provider/observer.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
 #include "chrome/browser/chromeos/file_system_provider/registry.h"
 #include "chrome/browser/chromeos/file_system_provider/registry_interface.h"
 #include "chrome/browser/chromeos/file_system_provider/service_factory.h"
 #include "chrome/browser/chromeos/file_system_provider/throttled_file_system.h"
+#include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "storage/browser/fileapi/external_mount_points.h"
 #include "storage/common/fileapi/file_system_mount_option.h"
 
 namespace chromeos {
 namespace file_system_provider {
 namespace {
 
 // Maximum number of file systems to be mounted in the same time, per profile.
@@ skipping 209 matching lines @@
   if (file_system_it == file_system_map_.end())
     return false;
 
   file_system_it->second->RequestUnmount(
       base::Bind(&Service::OnRequestUnmountStatus,
                  weak_ptr_factory_.GetWeakPtr(),
                  file_system_it->second->GetFileSystemInfo()));
   return true;
 }
 
+bool Service::RequestMount(const std::string& extension_id) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+  extensions::EventRouter* const event_router =
+      extensions::EventRouter::Get(profile_);
+  DCHECK(event_router);
+
+  if (!event_router->ExtensionHasEventListener(
+          extension_id, extensions::api::file_system_provider::
+                            OnMountRequested::kEventName)) {
+    return false;
+  }
+
+  event_router->DispatchEventToExtension(
+      extension_id,
+      make_scoped_ptr(new extensions::Event(
+          extensions::api::file_system_provider::OnMountRequested::kEventName,
+          scoped_ptr<base::ListValue>(nullptr))));
+
+  return true;
+}
+
 std::vector<ProvidedFileSystemInfo> Service::GetProvidedFileSystemInfoList() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   std::vector<ProvidedFileSystemInfo> result;
   for (ProvidedFileSystemMap::const_iterator it = file_system_map_.begin();
        it != file_system_map_.end();
        ++it) {
     result.push_back(it->second->GetFileSystemInfo());
   }
   return result;
@@ skipping 113 matching lines @@
 }
 
 void Service::OnWatcherListChanged(
     const ProvidedFileSystemInfo& file_system_info,
     const Watchers& watchers) {
   registry_->RememberFileSystem(file_system_info, watchers);
 }
 
 }  // namespace file_system_provider
 }  // namespace chromeos