bluetooth: Use WebBluetoothDeviceId instead of string
This adds more type safety to our current code and also allows us check the format
of the string that we get from the renderer.
Also moves the chromium variant bindings generation out of blink.gyp and into
content_common_mojo_bindings.gyp. This avoids adding a dependency to content/common
in blink.gyp since now the chromium bindings depend on
content/common/bluetooth/web_bluetooth_device_id
CQ_INCLUDE_TRYJOBS=master.tryserver.chromium.mac:mac_chromium_gyp_rel,master.tryserver.chromium.mac:mac_chromium_gyp_dbg
BUG=577962
Review-Url: https://codereview.chromium.org/2019853002
Cr-Commit-Position: refs/heads/master@{#405806}
25 files changed
