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Add missing fields to operator== and operator<<:
- downloaded_icon_sizes_monochrome_
- shortcuts_menu_item_infos_
- downloaded_shortcuts_menu_icons_sizes_
Use a separate Tie method to avoid repeating all fields twice.
Disable clang-format in the Tie method.
Add operator<< for WebApplicationShortcutsMenuItemInfo (required to add
it to use it in operator<< of WebApp).

Change-Id: I33b96b1209617e280a319d76be1e3e14681a3077
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2532539
Commit-Queue: Glen Robertson <glenrob@chromium.org>
Reviewed-by: Alan Cutter <alancutter@chromium.org>
Reviewed-by: Alexey Baskakov <loyso@chromium.org>
Auto-Submit: Glen Robertson <glenrob@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827149}