Break out WebKit.cpp wrappers.

Delete the empty and unused files in web/.

Bug: 712963
Change-Id: If0b2f20834e2474ae8ebf23259079045a85601ec
Reviewed-on: https://chromium-review.googlesource.com/599139
Commit-Queue: Nicholas Verne <nverne@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491674}
11 files changed