Revert of Remove unused PPB_View_Dev

Revert of Remove unused PPB_View_Dev (patchset #3 of https://codereview.chromium.org/498123002/)

Reason for revert:
I should've checked sooner; this is apparently still used by Flash. (See go/UMA, histograms, Pepper.InterfaceUsed)

Original issue's description:
> Remove unused PPB_View_Dev
> 
> TBR=binji@chromium.org
> 
> Committed: https://chromium.googlesource.com/chromium/src/+/2210d5fb49cd4b75972f2e304b29637c050de4f1

TBR=binji@chromium.org,raymes@chromium.org
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/dfb32745ba203c79a72579de583f8c7ef676d216
Cr-Commit-Position: refs/heads/master@{#292152}

[dmichael (off chromium), 2014-08-27 14:46:44]

Created Revert of Remove unused PPB_View_Dev

[commit-bot: I haz the power, 2014-08-27 14:47:04]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/dmichael@chromium.org/512703003/1

[commit-bot: I haz the power, 2014-08-27 14:47:49]

Committed patchset #1 (1) as fc146ac482b8347b440e1d749626d3fbaf02ac95

[commit-bot: I haz the power, 2014-09-10 02:51:41]

Patchset 1 (id:??) landed as
https://crrev.com/dfb32745ba203c79a72579de583f8c7ef676d216
Cr-Commit-Position: refs/heads/master@{#292152}