Add chromium side implementation of WebKit::WebCrypto.

Add chromium side implementation of WebKit::WebCrypto.

This adds the skeleton for the new files, however doesn't fill in any of the details yet.

BUG=245025
R=jamesr@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=212134

[eroman, 2013-07-16 18:47:37]

I tested this manually by using patchset 1, along with some blink-side changes
in my client.

I would like to lay down these empty files first to facilitate collaboration 
(so Bryan can start implementing the digest operations while I continue on the
blink side).

[abarth-chromium, 2013-07-17 00:01:51]

I'm probably not the right reviewer for the Chromium-side changes.  I don't
understand the constraints here as well.

[eroman, 2013-07-17 00:10:19]

James, is this something you could review?

The main thing to review here is file organization.
(I will get crypto reviewers for subsequent changelists which add to the
algorithms).

[jamesr, 2013-07-17 00:25:16]

Will web workers need/want access to this API?  If so then I think you want to
put this support code in content/child (which is shared by all content child
ptypes, including renderer and worker).  I'm happy to help get the organization
in shape.

[eroman, 2013-07-17 00:41:04]

This is renderer only.

(It is possible that in a future version of the WebCrypto spec this will be
exposed to web workers as well, however as things stand right now it is just
renderer).

[jamesr, 2013-07-17 00:48:05]

OK, in that case this lgtm

https://codereview.chromium.org/19355002/diff/2001/content/renderer/webcrypto...
File content/renderer/webcrypto_impl.h (right):

https://codereview.chromium.org/19355002/diff/2001/content/renderer/webcrypto...
content/renderer/webcrypto_impl.h:17: const WebKit::WebCryptoAlgorithm&)
OVERRIDE;
this is chromium code, so it should follow chromium style and name all
parameters

[eroman, 2013-07-17 01:23:22]

https://codereview.chromium.org/19355002/diff/2001/content/renderer/webcrypto...
File content/renderer/webcrypto_impl.h (right):

https://codereview.chromium.org/19355002/diff/2001/content/renderer/webcrypto...
content/renderer/webcrypto_impl.h:17: const WebKit::WebCryptoAlgorithm&)
OVERRIDE;
On 2013/07/17 00:48:11, jamesr wrote:
> this is chromium code, so it should follow chromium style and name all
> parameters

Done.

[commit-bot: I haz the power, 2013-07-17 17:50:45]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/eroman@chromium.org/19355002/15001

[commit-bot: I haz the power, 2013-07-17 19:55:27]

Sorry for I got bad news for ya.
Compile failed with a clobber build on ios_rel_device.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=ios_rel_de...
Your code is likely broken or HEAD is junk. Please ensure your
code is not broken then alert the build sheriffs.
Look at the try server FAQ for more details.

[eroman, 2013-07-17 21:23:23]

Committed patchset #4 manually as r212134 (presubmit successful).