Revert of Make components_browsertests swarmable and add to main waterfall.

Revert of Make components_browsertests swarmable and add to main waterfall. (patchset #3 id:40001 of https://codereview.chromium.org/863023003/)

Reason for revert:
Cause mac build flakiness, see http://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Mac/builds/21875/steps/compile/logs/stdio

I think the '<(PRODUCT_DIR)/Content Shell.app/', line in the isolate needs to go. Looking closer, we should be launching the components_browsertest binary for the renderer as well. Right now it launches Content Shell for the renderer, which seems odd.

Original issue's description:
> Make components_browsertests swarmable and add to main waterfall.
>
> - Makes components_browsertests swarmable.
> - Adds components_browsertests to the main waterfall for linux, mac and
>   win bots.
> - Updates the chromium tryserver to run components_browsertests as
>   swarmable.
>
> BUG=311270
>
> Committed: https://crrev.com/7a3df3b7171fa87f556d22803fdc02a67e975865
> Cr-Commit-Position: refs/heads/master@{#312886}

TBR=nyquist@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=311270
Committed: https://crrev.com/27ac8082963904942aaebcbf85620ae6e27ad5c9
Cr-Commit-Position: refs/heads/master@{#312976}

[jam, 2015-01-24 00:22:57]

Created Revert of Make components_browsertests swarmable and add to main
waterfall.

[commit-bot: I haz the power, 2015-01-24 00:24:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/856323003/1

[commit-bot: I haz the power, 2015-01-24 00:26:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-24 00:27:08]

Patchset 1 (id:??) landed as
https://crrev.com/27ac8082963904942aaebcbf85620ae6e27ad5c9
Cr-Commit-Position: refs/heads/master@{#312976}