This adds a number to the extension.

Note that for DownloadManager to keep this, the server
needs to send it a mime type it does not recognize. Right
now, it does not recognize application/json so it's okay,
but we'd do well to remove the content/type header from
the server to prevent problems.

Bug: 8467516
Change-Id: Ic484f66ac3f67c36f59f2c0bcb8c7fdeb6e8590d

Bug: 7600384
Change-Id: Ic5dbbbbcf19d778dde1316ebb417f1a8ede2d25d

What do you mean "Can't happen"?
It happens all the time - the empty string is the default ID, and it
needs to be updated like everyone else.

Bug: 8651858
Change-Id: I5a2f2ebb5b2ef08b27f26be8fb2c3d2f231ebcfc

Upon invoking the settings of the dictionary pack with an unknown
client, we now launch an intent to ask the client to make itself known.
This change also includes the code that receives this intent and
acts upon it.

Bug: 8492879
Change-Id: I2c6496dea845646961ecafcf64e282cb93ee91dc

Change-Id: Ia9a2e8f0672b3f72943f26fb15de1d3c7c5ce7f1

Bug: 8161354
Change-Id: I17c23f56dd3bc2f27726556bf2c5a9d5520bd172