Added group policy for disabling all client-side 3D APIs in Chromium ...

Added group policy for disabling all client-side 3D APIs in Chromium 
(in particular, WebGL and Pepper 3D). This has been hooked up through 
a new command-line argument (--disable-3d-apis) orthogonal to the 
existing ones, so that further changes to those command line arguments 
will not accidentally regress the group policy support. 

Tested in the following ways: 
- Verified that --disable-3d-apis disables WebGL and Pepper 3D 
support on Mac OS X. 
- Verified that specifying the Disable3DAPIs policy via a JSON file 
disables WebGL on Linux. 
- Ran unit_tests and verified that there were no failures introduced. 

BUG=64806
TEST=ConfigurationPolicyPrefStoreBooleanTest 

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=71072

[jschuh, 2011-01-08 00:00:54]

This is the m9 merge patch. The only significant change should be the removal of
the pepper support.

[Ken Russell (switch to Gerrit), 2011-01-08 00:10:43]

Thanks for doing this backport, but there's a major problem:

http://codereview.chromium.org/6179002/diff/1/chrome/browser/renderer_host/br...
File chrome/browser/renderer_host/browser_render_process_host.cc (right):

http://codereview.chromium.org/6179002/diff/1/chrome/browser/renderer_host/br...
chrome/browser/renderer_host/browser_render_process_host.cc:641:
switches::kEnableCrxlessWebApps
The passing down of --disable-3d-apis command line argument was dropped here.
This will prevent the entire patch from working!

[jschuh, 2011-01-08 00:22:50]

Sorry, stupid oversight on my part. I just didn't see that the second chunk of
that file failed to apply. Fixed it manually and am now restarting the unit test
compile. I'll ping when the tests run clean.

[Ken Russell (switch to Gerrit), 2011-01-08 01:47:09]

On 2011/01/08 00:22:50, Justin Schuh wrote:
> Sorry, stupid oversight on my part. I just didn't see that the second chunk of
> that file failed to apply. Fixed it manually and am now restarting the unit
test
> compile. I'll ping when the tests run clean.

Please also test WebGL content (example:
http://khronos.org/webgl/wiki/Demo_Repository ) with and without
--disable-3d-apis and make sure the flag works as expected.

[Ken Russell (switch to Gerrit), 2011-01-08 01:48:04]

The new patch LGTM as long as the support for the flag has been tested manually.

[jschuh, 2011-01-11 20:05:00]

Ran the tests and checked the switch manually. Everything is good and I just
landed on the branch.