Wrap log path in about:net-export.

Debug builds show the log file path, but because it doesn't wrap, the viewport
changes when the file is long. Force line-wrapping so net-export looks the same
size in debug and release.

BUG=none

Review URL: https://codereview.chromium.org/134263006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250228 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250228
Re-enable broken --allow-scripting-gallery flag for content scripts

The --allow-scripting-gallery flag was not effective, because it was only
checked in ChromeExtensionsClient::IsScriptableURL.
However, scripting access is ultimately denied because the flag is not
checked in RendererPermissionsPolicyDelegate::CanExecuteScriptOnPage.

Contributed by Rob Wu <rob@robwu.nl>

BUG=342090
TEST=Start Chrome with the --allow-scripting-gallery flag and install an
extension that inserts a content script on all URLs (e.g. Adblock Plus).
Then visit the Chrome Web Store and open the F12 developer tools.
At the console tab, verify that the extension is listed at the dropdown
menu where one can switch between the JavaScript execution environments.

Review URL: https://codereview.chromium.org/147203006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250229 0039d316-1c4b-4281-b951-d872f2087c98
Ensure that SAML IdPs use https on Chrome OS

This CL sets a CSP for the GAIA auth extension that ensures the entire
login flow, including redirects to SAML IdPs, uses https.

The FakeGaia and FakeSamlIdp classes used in SAML tests use the embedded
test server, which speaks http only. The CL therefore adds a test server
written in Python that speaks https and acts as a wrapper by forwarding
calls to the embedded test server over http.

TBR=asargent@chromium.org (for gaia_auth_extension_loader.cc)

BUG=337437
TEST=Full browser test coverage

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=250114

Review URL: https://codereview.chromium.org/150483002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250230 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250230