Disable more AppBannerDataFetcherBrowserTests
These are flaking on Win7:
https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%28dbg%29%281%29/builds/40732
https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%28dbg%29%281%29/builds/40733
https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%28dbg%29%281%29/builds/40747
BUG=517307
TBR=benwells@chromium.org
Review URL: https://codereview.chromium.org/
1289653002 .
Cr-Commit-Position: refs/heads/master@{#342921}