GitLab

There is a issue with text classifier that some capitalized words are not
annotated properly. Convert the text to lower case for now.

Bug: b/159756246
Test: manual test
Change-Id: I66d355f503890a2b1d3c183853210fb1fd4aa8a5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2261818Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: Yue Li <updowndota@chromium.org>
Commit-Queue: Li Lin <llin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#782080}