Remove the array of Provider Names and Provider Source and replace with a map.

Remove the array of Provider Names and Provider Source and replace with a map.

Provider Names and Provider Source are in the form of seprate array.
map usage will make it better readability and maintainability.

BUG=520352
Committed: https://crrev.com/179fa2991dbcf898490ff86688a628ffaa5af563
Cr-Commit-Position: refs/heads/master@{#343188}

[Deepak, 2015-08-13 04:28:20]

deepak.m1@samsung.com changed reviewers:
+ bauerb@chromium.org

[Deepak, 2015-08-13 04:28:20]

PTAL

[Bernhard Bauer, 2015-08-13 13:26:25]

LGTM, thanks!

[Deepak, 2015-08-13 13:28:44]

On 2015/08/13 13:26:25, Bernhard Bauer wrote:
> LGTM, thanks!

Thanks.

[Deepak, 2015-08-13 13:28:47]

The CQ bit was checked by deepak.m1@samsung.com

[commit-bot: I haz the power, 2015-08-13 13:28:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1287943006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1287943006/1

[commit-bot: I haz the power, 2015-08-13 13:33:39]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-13 13:34:37]

Patchset 1 (id:??) landed as
https://crrev.com/179fa2991dbcf898490ff86688a628ffaa5af563
Cr-Commit-Position: refs/heads/master@{#343188}