Storage manager: Show Google Drive offline files.

chrome/browser/ui/webui/options/chromeos/storage_manager_handler.h

Index: chrome/browser/ui/webui/options/chromeos/storage_manager_handler.h
diff --git a/chrome/browser/ui/webui/options/chromeos/storage_manager_handler.h b/chrome/browser/ui/webui/options/chromeos/storage_manager_handler.h
index a4f3969482f46fc7bfd533e9d374ae650fd41910..a8a1fc2861e6b72b5ad9407efce3b026a44c9759 100644
--- a/chrome/browser/ui/webui/options/chromeos/storage_manager_handler.h
+++ b/chrome/browser/ui/webui/options/chromeos/storage_manager_handler.h
@@ -31,6 +31,7 @@ class StorageManagerHandler : public ::options::OptionsPageUIHandler {
   void HandleUpdateStorageInfo(const base::ListValue* unused_args);
   void HandleOpenDownloads(const base::ListValue* unused_args);
   void HandleOpenArcStorage(const base::ListValue* unused_args);
+  void HandleClearDriveCache(const base::ListValue* unused_args);
 
   // Requests updating disk space information.
   void UpdateSizeStat();
@@ -44,12 +45,21 @@ class StorageManagerHandler : public ::options::OptionsPageUIHandler {
   // Callback to update the UI about the size of Downloads directory.
   void OnGetDownloadsSize(int64_t size);
 
+  // Requests updating the size of Drive Cache.
+  void UpdateDriveCacheSize();
+
+  // Callback to update the UI about the size of Drive Cache.
+  void OnGetDriveCacheSize(int64_t size);
+
   // Requests updating the space size used by Android apps and cache.
   void UpdateArcSize();
 
   // Callback to update the UI about Android apps and cache.
   void OnGetArcSize(bool succeeded, arc::mojom::ApplicationsSizePtr size);
 
+  // Callback called when clearing Drive cache is done.
+  void OnClearDriveCacheDone(bool success);
+
   base::WeakPtrFactory<StorageManagerHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(StorageManagerHandler);