Add media/test/data to content_browsertests and browser_tests isolate files.

Add media/test/data to content_browsertests and browser_tests isolate files.

The media browser tests (content and chrome) load data from media/test/data.

BUG=379314
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=283757

[shadi, 2014-07-16 18:08:25]

Hi Chris, can you PTAL?

This CL should fix the failures I saw after committing 
https://codereview.chromium.org/357413002. 
http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests/builds/12182/

I am not sure why try bots do not use the .isolated files. I think this CL
should fix the file not found problems.

[csharp, 2014-07-16 19:25:36]

lgtm

[shadi, 2014-07-16 19:43:39]

The CQ bit was checked by shadi@chromium.org

[commit-bot: I haz the power, 2014-07-16 19:45:58]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/shadi@chromium.org/399693002/1

[commit-bot: I haz the power, 2014-07-16 22:17:36]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-07-17 11:53:59]

Change committed as 283757