Revert of Device Orientation API on Chrome OS

Revert of Device Orientation API on Chrome OS (patchset #8 id:200001 of https://codereview.chromium.org/856123002/)

Reason for revert:
Compilation failure on CQ:

http://build.chromium.org/p/chromium.memory.fyi/builders/Chromium%20Linux%20ChromeOS%20MSan%20Builder/builds/1666/steps/compile/logs/stdio

Original issue's description:
> Device Orientation API on Chrome OS
>
> Implement DataFetcherSharedMemory on Chrome OS to provide Device Orientation support. Create SensorManagerChromeOS to observe accelerometer events, and to generate updates to the Device Orientation API.
>
> This is a follow up to: https://codereview.chromium.org/680383007/
>
> With the accelerometer on Chrome OS now exposed to content/ from chromeos/accelerometer, no ash/ implementation is required. No public api in content/public/browser is needed either.
>
> TEST=SensorManagerTest.OrientationBuffer, SensorManagerTest.NeutralOrientation, SensorManagerTest.UpsideDown, SensorManagerTest.BeforeUpsideDownBoundary, SensorManagerTest.LeftEdge, SensorManagerTest.RightEdge, SensorManagerTest.BeforeRightEdgeBoundary
> BUG=342908
>
> Committed: https://crrev.com/e717460964dd27a7239abec31462441eb971edbe
> Cr-Commit-Position: refs/heads/master@{#314605}

TBR=timvolodine@chromium.org,jam@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=342908
Committed: https://crrev.com/cc6a8bfeb49e93068e8df28f406e6ad0b5d6915e
Cr-Commit-Position: refs/heads/master@{#314622}

[jonross, 2015-02-04 20:25:42]

Created Revert of Device Orientation API on Chrome OS

[commit-bot: I haz the power, 2015-02-04 20:26:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/899973002/1

[commit-bot: I haz the power, 2015-02-04 20:27:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-04 20:28:46]

Patchset 1 (id:??) landed as
https://crrev.com/cc6a8bfeb49e93068e8df28f406e6ad0b5d6915e
Cr-Commit-Position: refs/heads/master@{#314622}