[Android] Migrate javascript settings to a content setting from a pref.
commitc404e85f318501565ebd0c8b3541fbc2e260b158
authortedchoc <tedchoc@chromium.org>
Thu, 12 Feb 2015 19:24:43 +0000 (12 11:24 -0800)
committerCommit bot <commit-bot@chromium.org>
Thu, 12 Feb 2015 19:25:19 +0000 (12 19:25 +0000)
tree9c1aa79c8bf676021a2ff49134af3356e08220e4
parente120b02a625c06ac40c6584b0100e4f01048a5e0
[Android] Migrate javascript settings to a content setting from a pref.

This also adds a preferences migration function and tracking system to
handle future changes.

BUG=454063

Review URL: https://codereview.chromium.org/920583002

Cr-Commit-Position: refs/heads/master@{#316023}
chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
chrome/browser/android/preferences/pref_service_bridge.cc