[cros] disable GDrive option on certain file pickers

ui/base/dialogs/select_file_dialog.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_BASE_DIALOGS_SELECT_FILE_DIALOG_H_
 #define UI_BASE_DIALOGS_SELECT_FILE_DIALOG_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 42 matching lines @@
     //
     // If not overridden, calls FileSelected() with path from |file|.
     virtual void FileSelectedWithExtraInfo(
         const ui::SelectedFileInfo& file,
         int index,
         void* params);
 
     // Notifies the Listener that many files have been selected. The
     // files are in |files|. |params| is contextual passed to SelectFile.
     virtual void MultiFilesSelected(
-      const std::vector<FilePath>& files, void* params) {}
+        const std::vector<FilePath>& files, void* params) {}
 
     // Similar to MultiFilesSelected() but takes SelectedFileInfo instead of
     // FilePath. Used for passing extra information (ex. display name).
     //
     // If not overridden, calls MultiFilesSelected() with paths from |files|.
     virtual void MultiFilesSelectedWithExtraInfo(
-      const std::vector<ui::SelectedFileInfo>& files,
-      void* params);
+        const std::vector<ui::SelectedFileInfo>& files,
+        void* params);
 
     // Notifies the Listener that the file/folder selection was aborted (via
     // the  user canceling or closing the selection dialog box, for example).
     // |params| is contextual passed to SelectFile.
     virtual void FileSelectionCanceled(void* params) {}
 
    protected:
     virtual ~Listener() {}
   };
 
   // Sets the factory that creates SelectFileDialog objects, overriding default
   // behaviour.
   //
   // This is optional and should only be used by components that have to live
   // elsewhere in the tree due to layering violations. (For example, because of
   // a dependency on chrome's extension system.)
   static void SetFactory(ui::SelectFileDialogFactory* factory);
 
   // Creates a dialog box helper. This object is ref-counted, but the returned
   // object will have no reference (refcount is 0). |policy| is an optional
   // class that can prevent showing a dialog.
   static SelectFileDialog* Create(Listener* listener,
                                   ui::SelectFilePolicy* policy);
 
   // Holds information about allowed extensions on a file save dialog.
-  // |extensions| is a list of allowed extensions. For example, it might be
-  //   { { "htm", "html" }, { "txt" } }. Only pass more than one extension
-  //   in the inner vector if the extensions are equivalent. Do NOT include
-  //   leading periods.
-  // |extension_description_overrides| overrides the system descriptions of the
-  //   specified extensions. Entries correspond to |extensions|; if left blank
-  //   the system descriptions will be used.
-  // |include_all_files| specifies whether there will be a filter added for all
-  //   files (i.e. *.*).
   struct UI_EXPORT FileTypeInfo {
     FileTypeInfo();
     ~FileTypeInfo();
 
+    // A list of allowed extensions. For example, it might be
+    //
+    //   { { "htm", "html" }, { "txt" } }
+    //
+    // Only pass more than one extension in the inner vector if the extensions
+    // are equivalent. Do NOT include leading periods.
     std::vector<std::vector<FilePath::StringType> > extensions;
+
+    // Overrides the system descriptions of the specified extensions. Entries
+    // correspond to |extensions|; if left blank the system descriptions will
+    // be used.
     std::vector<string16> extension_description_overrides;
+
+    // Specifies whether there will be a filter added for all files (i.e. *.*).
     bool include_all_files;
+
+    // Specifies whether the caller can support files/folders that are on
+    // GDrive.
+    bool support_gdata;
   };
 
   // Selects a File.
   // Before doing anything this function checks if FileBrowsing is forbidden
   // by Policy. If so, it tries to show an InfoBar and behaves as though no File
   // was selected (the user clicked `Cancel` immediately).
   // Otherwise it will start displaying the dialog box. This will also
   // block the calling window until the dialog box is complete. The listener
   // associated with this object will be notified when the selection is
   // complete.
@@ skipping 62 matching lines @@
   virtual bool HasMultipleFileTypeChoicesImpl() = 0;
 
   scoped_ptr<ui::SelectFilePolicy> select_file_policy_;
 
   DISALLOW_COPY_AND_ASSIGN(SelectFileDialog);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_DIALOGS_SELECT_FILE_DIALOG_H_