Fix csp flags send to browsers.

Fix csp flags send to browsers.

We can't send the webkit flag to chrome, it will throw an error.

R=kustermann@google.com

Committed: https://code.google.com/p/dart/source/detail?r=22178

[kustermann, 2013-04-30 11:36:51]

lgtm

https://codereview.chromium.org/14645003/diff/1/tools/testing/dart/http_serve...
File tools/testing/dart/http_server.dart (right):

https://codereview.chromium.org/14645003/diff/1/tools/testing/dart/http_serve...
tools/testing/dart/http_server.dart:333: if (runtime == "safari") {
Once we're doing mobile stuff as well, we have more than one 'safari' based
browser. Maybe we should make a list or so?

https://codereview.chromium.org/14645003/diff/1/tools/testing/dart/http_serve...
tools/testing/dart/http_server.dart:335: "script-src 'self'; object-src
'self'");
You could extract the "script-sr....." into a variable so we don't have it
twice.

[ricow1, 2013-04-30 12:02:54]

Committed patchset #2 manually as r22178 (presubmit successful).