Media Galleries: Add a dropPermissionForMediaFileSystem() API.

chrome/browser/extensions/api/media_galleries/media_galleries_api.cc

Index: chrome/browser/extensions/api/media_galleries/media_galleries_api.cc
===================================================================
--- chrome/browser/extensions/api/media_galleries/media_galleries_api.cc	(revision 261942)
+++ chrome/browser/extensions/api/media_galleries/media_galleries_api.cc	(working copy)
@@ -62,6 +62,7 @@
 namespace extensions {
 
 namespace MediaGalleries = api::media_galleries;
+namespace ForgetMediaFileSystem = MediaGalleries::ForgetMediaFileSystem;
 namespace GetMediaFileSystems = MediaGalleries::GetMediaFileSystems;
 
 namespace {
@@ -643,6 +644,44 @@
       render_view_host(), GetExtension(), cb);
 }
 
+MediaGalleriesForgetMediaFileSystemFunction::
+    ~MediaGalleriesForgetMediaFileSystemFunction() {}
+
+bool MediaGalleriesForgetMediaFileSystemFunction::RunImpl() {
+  media_galleries::UsageCount(media_galleries::FORGET_MEDIA_FILE_SYSTEM);
+
+  // Default callback return value is false.
+  SetResult(new base::FundamentalValue(false));
+
+  scoped_ptr<ForgetMediaFileSystem::Params> params(
+      ForgetMediaFileSystem::Params::Create(*args_));
+  EXTENSION_FUNCTION_VALIDATE(params.get());
+  const base::DictionaryValue& file_system =
+      params->media_file_system.additional_properties;
+  if (!file_system.HasKey(kGalleryIdKey))
+    return false;
+  base::string16 pref_id_str;
+  if (!file_system.GetString(kGalleryIdKey, &pref_id_str))
+    return false;
+  MediaGalleryPrefId pref_id;
+  if (!base::StringToUint64(pref_id_str, &pref_id))
+    return false;
+
+  return Setup(GetProfile(), &error_, base::Bind(
+      &MediaGalleriesForgetMediaFileSystemFunction::OnPreferencesInit,
+      this, pref_id));
+}
+
+void MediaGalleriesForgetMediaFileSystemFunction::OnPreferencesInit(
+    MediaGalleryPrefId pref_id) {
+  MediaGalleriesPreferences* preferences =
+      media_file_system_registry()->GetPreferences(GetProfile());
+  bool forgotten = preferences->SetGalleryPermissionForExtension(
+      *GetExtension(), pref_id, false);
+  SetResult(new base::FundamentalValue(forgotten));
+  SendResponse(true);
+}
+
 MediaGalleriesStartMediaScanFunction::~MediaGalleriesStartMediaScanFunction() {}
 
 bool MediaGalleriesStartMediaScanFunction::RunImpl() {