Enable QUIC proxies to be used for HTTP URLs.

BUG=335275

Review URL: https://codereview.chromium.org/138283005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249016 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249016
Fix NPE in GestResourceProvider::StartUpdating

BUG=332480
TBR=yoshiki@chromium.org

Review URL: https://codereview.chromium.org/154763002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249017 0039d316-1c4b-4281-b951-d872f2087c98
[SyncFS] Clean up MetadataDatabase::PopulateInitialData

 * Rename PutFileToBatch to PutFileMetadataToBatch
 * Rename PutTrackerToBatch to PutFileTrackerToBatch
 * Split PopulateInitialData implementation to AttachSyncRoot and AttachInitialAppRoot

BUG=331988
NOTRY=true

Review URL: https://codereview.chromium.org/140433008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249018 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249018