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

chrome/browser/chromeos/file_system_provider/service.cc

Index: chrome/browser/chromeos/file_system_provider/service.cc
diff --git a/chrome/browser/chromeos/file_system_provider/service.cc b/chrome/browser/chromeos/file_system_provider/service.cc
index fa4699151a3d5858df0316e7684cf20f5a5c8e95..08f0985b9e1dabe4a3a1edc08e1693a5d1380ee1 100644
--- a/chrome/browser/chromeos/file_system_provider/service.cc
+++ b/chrome/browser/chromeos/file_system_provider/service.cc
@@ -8,6 +8,7 @@
 #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"
@@ -16,6 +17,7 @@
 #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"
@@ -245,6 +247,28 @@ bool Service::RequestUnmount(const std::string& extension_id,
   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());