Revert 156348 (caused http://crbug.com/149828)

Revert 156348 (caused http://crbug.com/149828)
- Change getDevices to use a DeviceCallback.

This modifies the getDevices method of the bluetooth Extensions API to
accept a DeviceCallback, which will be called for every matching device.

This will allow more thorough, long-running searches (involving SDP
queries) to be performed without slowing down access to matching devices
that can be returned quickly.

TEST=api test updated
BUG=134545
Review URL: https://chromiumcodereview.appspot.com/10915148

TBR=bryeung@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=157030

[not at google - send to devlin, 2012-09-16 01:21:16]

The breakage is more likely caused by 157025, more specifically,

- 157025 causes functions not to be serialized into objects anymore (correct
behaviour)
- JSON Schema Compiler still expects a required function to be present (i.e. be
a dictionary)
- This patch added a required function.

It should be safe to re-land this and I'll reland my patch today or tomorrow.

[not at google - send to devlin, 2012-09-16 01:21:33]

P.S. I reverted 157025.

[Nico, 2012-09-16 01:36:01]

Thanks! Can you revert this revert then? (I'm not at a computer atm and
won't be for a few hours)
On Sep 16, 2012 10:21 AM, <kalman@chromium.org> wrote:

> P.S. I reverted 157025.
>
>
https://codereview.chromium.**org/10916331/<https://codereview.chromium.org/1...
>

[Nico, 2012-09-16 12:24:10]

byreung: kalman reverted the revert in r157036 (thanks!)

On Sat, Sep 15, 2012 at 6:35 PM, Nico Weber <thakis@chromium.org> wrote:
> Thanks! Can you revert this revert then? (I'm not at a computer atm and
> won't be for a few hours)
>
> On Sep 16, 2012 10:21 AM, <kalman@chromium.org> wrote:
>>
>> P.S. I reverted 157025.
>>
>> https://codereview.chromium.org/10916331/