Port ppapi_bad test from nacl_integration to browser_tests.

PNaCl is not supported because crash throttling interferes with the test.
CORS tests were removed because they were redunant with existing tests and would
have been difficult to port because of how browser_test's http server behaves.
The dynamic loading test was removed because it required a golden file and would
likely never work as a browser_test.

BUG=154400

Review URL: https://codereview.chromium.org/116843002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241424 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241424