Move Views Page Info UI code to its own folder.

Includes the following changes:
- Forks OWNERS file.
- Updates the COMPONENT in both OWNERS files:
  - website_settings: UI>Browser>Permissions>Prompts
  - page_info: UI>Browser>Bubbles>PageInfo
- Automatically updates filenames across the project using
  `tools/git/mass-rename.py`

Followup work that is NOT part of this change:
- Add lgarron@ as an owner (crbug.com/661797)
- Move permission prompt UI code into a permission_bubble folder
  (crbug.com/700581)
- Rename classes and corresponding leaf file names (crbug.com/571506)
- Functional cleanup changes (crbug.com/571533)

BUG=661796
TBR=jochen@chromium.org

Review-Url: https://codereview.chromium.org/2744933002
Cr-Commit-Position: refs/heads/master@{#456974}
21 files changed