Implement chrome.downloads.onDeterminingFilename()

chrome/renderer/extensions/dispatcher.cc

Index: chrome/renderer/extensions/dispatcher.cc
diff --git a/chrome/renderer/extensions/dispatcher.cc b/chrome/renderer/extensions/dispatcher.cc
index dcd161f2882601b4a22f1d81bddf5703b8b32d0c..1fc33ebd86bddaafd8cf2a6c9401451940384ba7 100644
--- a/chrome/renderer/extensions/dispatcher.cc
+++ b/chrome/renderer/extensions/dispatcher.cc
@@ -27,6 +27,7 @@
 #include "chrome/renderer/extensions/chrome_v8_extension.h"
 #include "chrome/renderer/extensions/content_watcher.h"
 #include "chrome/renderer/extensions/context_menus_custom_bindings.h"
+#include "chrome/renderer/extensions/downloads_custom_bindings.h"
 #include "chrome/renderer/extensions/event_bindings.h"
 #include "chrome/renderer/extensions/extension_custom_bindings.h"
 #include "chrome/renderer/extensions/extension_groups.h"
@@ -590,11 +591,11 @@ void Dispatcher::RegisterNativeHandlers(ModuleSystem* module_system,
       scoped_ptr<NativeHandler>(new AppWindowCustomBindings(this)));
   module_system->RegisterNativeHandler("context_menus",
       scoped_ptr<NativeHandler>(new ContextMenusCustomBindings()));
+  module_system->RegisterNativeHandler("downloads",
+      scoped_ptr<NativeHandler>(new DownloadsCustomBindings()));
   module_system->RegisterNativeHandler("extension",
       scoped_ptr<NativeHandler>(
           new ExtensionCustomBindings(this)));
-  module_system->RegisterNativeHandler("sync_file_system",
-      scoped_ptr<NativeHandler>(new SyncFileSystemCustomBindings()));
   module_system->RegisterNativeHandler("file_browser_handler",
       scoped_ptr<NativeHandler>(new FileBrowserHandlerCustomBindings()));
   module_system->RegisterNativeHandler("file_browser_private",
@@ -610,6 +611,8 @@ void Dispatcher::RegisterNativeHandlers(ModuleSystem* module_system,
       scoped_ptr<NativeHandler>(new PageCaptureCustomBindings()));
   module_system->RegisterNativeHandler("runtime",
       scoped_ptr<NativeHandler>(new RuntimeCustomBindings(context)));
+  module_system->RegisterNativeHandler("sync_file_system",
+      scoped_ptr<NativeHandler>(new SyncFileSystemCustomBindings()));
   module_system->RegisterNativeHandler("tabs",
       scoped_ptr<NativeHandler>(new TabsCustomBindings()));
   module_system->RegisterNativeHandler("tts",
@@ -654,6 +657,8 @@ void Dispatcher::PopulateSourceMap() {
                              IDR_DECLARATIVE_CONTENT_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource("declarativeWebRequest",
                              IDR_DECLARATIVE_WEBREQUEST_CUSTOM_BINDINGS_JS);
+  source_map_.RegisterSource("downloads",
+                             IDR_DOWNLOADS_CUSTOM_BINDINGS_JS);
   source_map_.RegisterSource(
       "experimental.mediaGalleries",
       IDR_EXPERIMENTAL_MEDIA_GALLERIES_CUSTOM_BINDINGS_JS);