GitLab

- Remove non-existent source files
- Add missing dependencies
- Move browser_interface_broker_proxy.h and
  thread_safe_browser_interface_broker_proxy.h from public:blink_headers
  to public/common:headers
  These files are included by common:common, however we can't add
  public:blink_headers to common:common's deps because of a circular
  dependency.

This CL has no behavior changes.

Bug: 800764
Change-Id: I61cc0c08978ed0594cb0a0f7b395721978a36a97
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2434009
Auto-Submit: Kent Tamura <tkent@chromium.org>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811102}