Add a data source field for volumes.

chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.cc

Index: chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.cc
diff --git a/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.cc b/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.cc
index 09a892075b42b6b2db6226c4e2b4be81d3eef198..643bb3db237cfb6bfe0252dd6b384ba5a2d96329 100644
--- a/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.cc
+++ b/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.cc
@@ -70,6 +70,22 @@ scoped_ptr<ProvidedFileSystemObserver::Changes> ParseChanges(
   return results;
 }
 
+// Converts the file system source from the IDL type to a native type.
+chromeos::file_system_provider::Source ParseSource(
+    const api::file_system_provider::FileSystemSource& source) {
+  switch (source) {
+    case api::file_system_provider::FILE_SYSTEM_SOURCE_FILE:
+      return chromeos::file_system_provider::SOURCE_FILE;
+    case api::file_system_provider::FILE_SYSTEM_SOURCE_DEVICE:
+      return chromeos::file_system_provider::SOURCE_DEVICE;
+    case api::file_system_provider::FILE_SYSTEM_SOURCE_NETWORK:
+      return chromeos::file_system_provider::SOURCE_NETWORK;
+    case api::file_system_provider::FILE_SYSTEM_SOURCE_NONE:
+      return chromeos::file_system_provider::SOURCE_UNKNOWN;
+  }
+  return chromeos::file_system_provider::SOURCE_UNKNOWN;
+}
+
 // Fills the IDL's FileSystemInfo with FSP's ProvidedFileSystemInfo and
 // Watchers.
 void FillFileSystemInfo(const ProvidedFileSystemInfo& file_system_info,
@@ -83,6 +99,20 @@ void FillFileSystemInfo(const ProvidedFileSystemInfo& file_system_info,
   output->display_name = file_system_info.display_name();
   output->writable = file_system_info.writable();
   output->opened_files_limit = file_system_info.opened_files_limit();
+  switch (file_system_info.source()) {
+    case chromeos::file_system_provider::SOURCE_FILE:
+      output->source = api::file_system_provider::FILE_SYSTEM_SOURCE_FILE;
+      break;
+    case chromeos::file_system_provider::SOURCE_DEVICE:
+      output->source = api::file_system_provider::FILE_SYSTEM_SOURCE_DEVICE;
+      break;
+    case chromeos::file_system_provider::SOURCE_NETWORK:
+      output->source = api::file_system_provider::FILE_SYSTEM_SOURCE_NETWORK;
+      break;
+    case chromeos::file_system_provider::SOURCE_UNKNOWN:
+      output->source = api::file_system_provider::FILE_SYSTEM_SOURCE_NONE;
+      break;
+  }
 
   std::vector<linked_ptr<Watcher>> watcher_items;
   for (const auto& watcher : watchers) {
@@ -152,6 +182,7 @@ bool FileSystemProviderMountFunction::RunSync() {
                                    ? *params->options.opened_files_limit.get()
                                    : 0;
   options.supports_notify_tag = params->options.supports_notify_tag;
+  options.source = ParseSource(params->options.source);
 
   const base::File::Error result =
       service->MountFileSystem(extension_id(), options);