IndexedDB: No-op move of files to renderer/modules/indexeddb/

This change is a no-op move of files from:
- public/platform/modules/indexeddb/
- renderer/modules/exported/

to renderer/modules/indexeddb/.  Moving these all at once will allow
later CLs to be smaller and clearer.

Bug: 717812
Change-Id: I9952ca8a5d2e220f936662ab4640d26337daa56d
Reviewed-on: https://chromium-review.googlesource.com/c/1352624
Commit-Queue: Chase Phillips <cmp@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Daniel Murphy <dmurph@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#614241}
54 files changed