Unseasoned PDF viewer (migrating the PDF viewer off Pepper)

[K. Moon]

Design doc link: https://docs.google.com/document/d/1olIb-1IFVqP2fLTq0eAdW-aL-K2dDDZGDe5mZgHGfO8/edit (go/chrome-unseasoned-pdf-viewer)

Summary

Chrome’s built-in PDF viewer relies on a native plugin that uses the Pepper Plugin API (PPAPI). Pepper is slated to be removed as part of the (P)NaCl deprecation and the end of support for Flash. We plan to migrate the PDF viewer plugin from a separate Pepper process into an ordinary renderer process, and to migrate all Pepper API calls to the renderer-native equivalents. This will unblock Pepper removal, and simplify the PDF viewer.

Platforms

Mac, Windows, Linux, Chrome OS (the built-in PDF viewer only exists on desktop platforms)

Team

Project lead: km...@chromium.org

Team TL: the...@chromium.org

Bug

https://crbug.com/702993

Code affected

• Built-in PDF viewer (plugin and extension)

• MimeHandlerView

• Plugin handling

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[Brett Wilson]

Very exciting, I can't wait for all plugins to be removed!

Brett

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[Jeremy Roman]

+1; this is super exciting. Behaving more like a web renderer would seem to open the doors to lots of potential improvements, like better compositor integration.

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['Kentaro Hara' via chromium-design-docs]

Behaving more like a web renderer would seem to open the doors to lots of potential improvements, like better compositor integration.

The PDF viewer and Blink share a lot of problems e.g., script execution. A big +1 to making the architecture more aligned!

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Kentaro Hara, Tokyo, Japan

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[K. Moon]

Thanks for the positive feedback! I'm glad to see strong support for the overall direction of the proposal. (Even while we work out some of the trickier details...)

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