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Scott Wu authoredThis CL creates the skeleton of common password controller and moves FormActivityObserver related logic into it`. The goal is to move common password autofill logics into components folder so that they can be shared by both Chrome iOS and //ios/web_view. > Moved webState and jsPasswordManager into helper class. > Moved FormActivityObserver logic into helper class. Bug: 865114 Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet Change-Id: I2dbfdb1cb4f0bdf22bf1d5c37451f46682addcac Reviewed-on: https://chromium-review.googlesource.com/1156528Reviewed-by: Moe Ahmadi <mahmadi@chromium.org> Reviewed-by: Hiroshi Ichikawa <ichikawa@chromium.org> Reviewed-by: John Wu <jzw@chromium.org> Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org> Commit-Queue: Scott Wu <scottwu@chromium.org> Cr-Commit-Position: refs/heads/master@{#585356} 35738513