GitLab

FileSystem::GetFileByResourceId was converting resource ID to file path and then calling EnsureFileDownloaded.
Rename EnsureFileDownloaded to EnsureFileDownloadedByPath and add an additional version EnsureFlieDownloadedByResourceID
to avoid the unnecessary conversion from resource ID to file path.

BUG=244135
TEST=unit_tests
R=satorux@chromium.org

Review URL: https://codereview.chromium.org/16190003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@203040 0039d316-1c4b-4281-b951-d872f2087c98