Disable flaky BrowserSelectFileDialogTest.ModalTest on Linux

chrome/browser/ui/libgtkui/select_file_dialog_interactive_uitest.cc

Index: chrome/browser/ui/libgtkui/select_file_dialog_interactive_uitest.cc
diff --git a/chrome/browser/ui/libgtkui/select_file_dialog_interactive_uitest.cc b/chrome/browser/ui/libgtkui/select_file_dialog_interactive_uitest.cc
index be18ef84d24e751e66e9b551dbcc5837342bba00..669974c2ed056e8f8e266a3237f33cc12173b781 100644
--- a/chrome/browser/ui/libgtkui/select_file_dialog_interactive_uitest.cc
+++ b/chrome/browser/ui/libgtkui/select_file_dialog_interactive_uitest.cc
@@ -68,7 +68,8 @@ class FilePicker : public ui::SelectFileDialog::Listener {
 }  // namespace libgtkui
 
 // Leaks in GtkFileChooserDialog. http://crbug.com/537468
-#if defined(ADDRESS_SANITIZER)
+// Flaky on Linux. http://crbug.com/700134
+#if defined(ADDRESS_SANITIZER) || defined(OS_LINUX)
 #define MAYBE_ModalTest DISABLED_ModalTest
 #else
 #define MAYBE_ModalTest ModalTest