commit 855fd86acac147c38ad69e38175764769d7a4524
author Christian Xu <christianxu@google.com> Wed Sep 03 16:41:53 2025
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Wed Sep 03 16:41:53 2025
tree 2b3611907461dee94d29b1c430c610bda6f5f040
parent 7ec707ceb65abf184e6a61d78759cb4d8bd8cf67

[iOS][AIM] Add PDF file support to AIM prototype

This CL adds the ability for users to select and upload PDF files in the AIM prototype feature.

- A "File" option is added to the input UI, which presents a UIDocumentPickerViewController to select a PDF.
- The coordinator handles the picker result, converts the `NSURL` to a `GURL`, and passes it to the mediator.
- The mediator now processes the `GURL` for the PDF file:
    - It reads the files data on a background thread.
    - It generates a thumbnail preview of the first page using `PDFKit`.
    - It uploads the file data using the existing `ComposeboxQueryController` flow.
- Adds the `PDFKit.framework` dependency.

Demo: https://screencast.googleplex.com/cast/NDk1MTM1MTc4NzI1Nzg1Nnw0OTcyOWM3Mi00Mg

Fixed: 440076029
Change-Id: Iad1eabc3b40fd4d7dd39bc63bfbb7639d478a09f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6874114
Auto-Submit: Christian Xu <christianxu@chromium.org>
Reviewed-by: Jason Hu <hujasonx@google.com>
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Commit-Queue: Jason Hu <hujasonx@google.com>
Cr-Commit-Position: refs/heads/main@{#1510321}