Expire broken QUIC A-P mappings after some interval with backoff.

BUG=230030

Review URL: https://codereview.chromium.org/199223002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257042 0039d316-1c4b-4281-b951-d872f2087c98
[Android] Suppress redundant autozoom for nodes already autozoomed

Track whether a focused editable node has been autozoom'ed in RenderViewImpl,
suppressing redundant autozoom requests for the same node. Also remove scale and
scroll saving/restoration support when the keyboard is hidden after initial
focus of an editable node.

BUG=345926
TBR=palmer@chromium.org

Review URL: https://codereview.chromium.org/197873002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257043 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 257043
Add the leveldb coding changes for IDB blob support.

BUG=108012

Review URL: https://codereview.chromium.org/198133002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257044 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 257044