Make case style consistent in resource_response.h

The primary motivation of CL is that the function names aren't
consistent within resource_response.h
(e.g."HttpHeaderField" and "AddHTTPHeaderField").

This CL renames function |AddHTTPHeaderField| to |AddHttpHeaderField| and ports
other dependent files to refer to a new function name.

Bug: 937196
Change-Id: I9feea8d149878769523a3a6a546209a98e285ae5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1527914
Commit-Queue: Abhijeet Kandalkar <abhijeet@igalia.com>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Dan Sanders <sandersd@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#643377}
31 files changed