[CFI] Blacklist newly failing file

Change-Id: I7717f832c3aeb005b5258fd4206c14dccc13aba1
Reviewed-on: https://chromium-review.googlesource.com/961250Reviewed-by: Peter Collingbourne <pcc@chromium.org>
Commit-Queue: Peter Collingbourne <pcc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542902}

tools/cfi/blacklist.txt

@@ -167,6 +167,7 @@ src:*third_party/webrtc/modules/desktop_capture/x11/x_server_pixel_buffer.cc
 src:*media/cdm/*
 src:*third_party/swiftshader/*
 src:*base/native_library_unittest.cc
+src:*chrome/browser/ui/libgtkui/app_indicator_icon.cc
 
 # chrome/browser/ui/views/frame/global_menu_bar_x11.cc
 fun:*GlobalMenuBarX11*