Revert of Telemetry: Fix exact_matches in telemetry.test_runner.

Revert of Telemetry: Fix exact_matches in telemetry.test_runner. (patchset #4 id:60001 of https://codereview.chromium.org/560153004/)

Reason for revert:
Can't find the webrtc tests.

http://build.chromium.org/p/chromium.perf/builders/Win%207%20x64%20Perf%20%281%29/builds/2649

Original issue's description:
> Telemetry: Fix exact_matches in telemetry.test_runner.
>
> Previously, if exact_matches was True but there were no exact matches,
> it would return fuzzy matches instead. This is not what the caller asked
> for.
>
> GPU test names are changed to match the buildbot config, since they were
> previously relying on fuzzy matching.
>
> SHERIFFS: May cause errors like:
>
>   No test named "some_test_name".
>
>   Available tests are:
>     ...
>
> If so, this CL can be safely reverted.
>
> BUG=413334, 413442
>
> Committed: https://crrev.com/566ed9f6e71cea313c88e8f259eca76581b72d67
> Cr-Commit-Position: refs/heads/master@{#294757}

TBR=nednguyen@google.com,ariblue@google.com,dtu@chromium.org,kbr@chromium.org,tonyg@chromium.org,jbroman@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=413334, 413442
Committed: https://crrev.com/0994ab58a950f125c33fa2c0a078c99caaaf9202
Cr-Commit-Position: refs/heads/master@{#294812}

[dsinclair, 2014-09-15 13:27:51]

Created Revert of Telemetry: Fix exact_matches in telemetry.test_runner.

[commit-bot: I haz the power, 2014-09-15 13:29:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/555703005/1

[commit-bot: I haz the power, 2014-09-15 13:31:23]

Committed patchset #1 (id:1) as 09b2b9350a9275ead3ed8f56129eb7f2b0d44056

[commit-bot: I haz the power, 2014-09-15 13:34:45]

Patchset 1 (id:??) landed as
https://crrev.com/0994ab58a950f125c33fa2c0a078c99caaaf9202
Cr-Commit-Position: refs/heads/master@{#294812}