Making webrtc-internals test run longer, adding a bunch of metrics.

This patch extends the webrtc-internals test to log all ssrc stream
metrics besides all video BWE metrics. It also makes the test run
longer, which should give BWE time to stabilize and report values we
we can reliably regression monitor.

Review URL: https://codereview.chromium.org/64553016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237082 0039d316-1c4b-4281-b951-d872f2087c98
Fixed regression in about:policy from revision 235005.

The Profile's PolicyService does not include the DeviceCloudPolicyManager since
https://codereview.chromium.org/60823003, but about:policy reads policy data
from that service.

This change adds the DeviceCloudPolicyManager to the Profile's PolicyService
too, but unlike the platform provide it is not wrapped by a
ForwardingPolicyProvider, since it's not currently used as a source of
policy for components for the profile.

BUG=321281

Review URL: https://codereview.chromium.org/83413003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237083 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237083
Deleting URLFetcher at completion in WebRtcLogUploader.

Fixes memory leak.

TEST=Run HangoutServicesBrowserTest.RunComponentExtensionTest in browser_tests with LSan enabled and webrtc_log_uploader()->OverrideUploadWithBufferForTesting commented out in the test (phew!)
BUG=316613

Review URL: https://codereview.chromium.org/84943007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237084 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237084