Add platform APIs for the unprefixed EME APIs.

Add platform APIs for the unprefixed EME APIs.

BUG=224791
R=abarth@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=152323

[ddorwin, 2013-06-13 00:12:13]

This is the final version of the platform APIs from
https://codereview.chromium.org/16387015/.

After I land this, I can commit the Chromium code and, finally, the above CL all
without breaking the layout tests.

[abarth-chromium, 2013-06-13 00:15:45]

https://codereview.chromium.org/16841007/diff/1/public/platform/WebContentDec...
File public/platform/WebContentDecryptionModuleSession.h (right):

https://codereview.chromium.org/16841007/diff/1/public/platform/WebContentDec...
public/platform/WebContentDecryptionModuleSession.h:58: virtual const WebString&
sessionId() const = 0;
Are you sure you want to return the WebString by const & ?  That implies that
the impl has to retain the object...  Might be better to just return WebString.

[abarth-chromium, 2013-06-13 00:16:24]

LGTM

[ddorwin, 2013-06-13 00:24:13]

https://codereview.chromium.org/16841007/diff/1/public/platform/WebContentDec...
File public/platform/WebContentDecryptionModuleSession.h (right):

https://codereview.chromium.org/16841007/diff/1/public/platform/WebContentDec...
public/platform/WebContentDecryptionModuleSession.h:58: virtual const WebString&
sessionId() const = 0;
On 2013/06/13 00:15:45, abarth wrote:
> Are you sure you want to return the WebString by const & ?  That implies that
> the impl has to retain the object...  Might be better to just return
WebString.

Done.

[commit-bot: I haz the power, 2013-06-13 00:30:39]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ddorwin@chromium.org/16841007/12001

[commit-bot: I haz the power, 2013-06-13 02:40:27]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ddorwin@chromium.org/16841007/12001

[ddorwin, 2013-06-13 05:27:09]

Committed patchset #2 manually as r152323 (presubmit successful).