[iOS] Add search for copied image to search actions widget

Bug: 913958
Change-Id: I6c37831e3ed06d03a4eed468dc7da5f561c2897e
Reviewed-on: https://chromium-review.googlesource.com/c/1474759
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Commit-Queue: Robbie Gibson <rkgibson@google.com>
Cr-Commit-Position: refs/heads/master@{#634591}
17 files changed