Remove modules/filesystem/DraggedIsolatedFileSystem.h dependency from core/DEPS.

Review URL: https://codereview.chromium.org/256103007

git-svn-id: svn://svn.chromium.org/blink/trunk@172825 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Make HTMLTokenizer static strings threadsafe

Because we run the HTMLTokenizer on multiple threads, we cannot use
DEFINE_STATIC_LOCAL because that macro isn't thread safe. It's possible that
one thread will see a null pointer because it thinks the static has been
initialized but hasn't seen the actual pointer store yet.

This CL removes that race condition by moving the static strings into
threadsafe strings that are initialized at startup. I don't believe we have a
way to test this issue with our current testing setup.

R=eseidel@chromium.org
BUG=363991

Review URL: https://codereview.chromium.org/253773005

git-svn-id: svn://svn.chromium.org/blink/trunk@172826 bbb929c8-8fbe-4397-9dbb-9b2b20218538