Revert of Remove PagePopup runtime flag (status=stable) for chromium (patchset #2 id:20001 of https://codereview.chromium.org/586053003/)
Revert of Remove PagePopup runtime flag (status=stable) for chromium (patchset #2 id:20001 of https://codereview.chromium.org/586053003/)

Reason for revert:
Broke <input type=color> UI on Android.

Original issue's description:
> Remove PagePopup runtime flag (status=stable) for chromium
>
> BUG=402536
>
> Committed: https://crrev.com/a0a8313cd7d7ae41ebd07c5fcba0c8659613fb87
> Cr-Commit-Position: refs/heads/master@{#298665}

TBR=avi@chromium.org,heeyoun.lee@samsung.com
NOTREECHECKS=true
NOTRY=true
BUG=402536

Review URL: https://codereview.chromium.org/641563002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#298669}

axinging/chromium-crosswalk,markYoungH/chromium.src,PeterWangIntel/chromium-crosswalk,krieger-od/nwjs_chromium.src,TheTypoMaster/chromium-crosswalk,Pluto-tv/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,Jonekee/chromium.src,Chilledheart/chromium,Fireblend/chromium-crosswalk,fujunwei/chromium-crosswalk,Jonekee/chromium.src,fujunwei/chromium-crosswalk,dednal/chromium.src,mohamed--abdel-maksoud/chromium.src,jaruba/chromium.src,M4sse/chromium.src,hgl888/chromium-crosswalk,Pluto-tv/chromium-crosswalk,Fireblend/chromium-crosswalk,Fireblend/chromium-crosswalk,dednal/chromium.src,TheTypoMaster/chromium-crosswalk,fujunwei/chromium-crosswalk,dednal/chromium.src,hgl888/chromium-crosswalk,hgl888/chromium-crosswalk,jaruba/chromium.src,axinging/chromium-crosswalk,dushu1203/chromium.src,markYoungH/chromium.src,krieger-od/nwjs_chromium.src,hgl888/chromium-crosswalk,markYoungH/chromium.src,krieger-od/nwjs_chromium.src,dushu1203/chromium.src,axinging/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,ltilve/chromium,TheTypoMaster/chromium-crosswalk,krieger-od/nwjs_chromium.src,mohamed--abdel-maksoud/chromium.src,markYoungH/chromium.src,jaruba/chromium.src,mohamed--abdel-maksoud/chromium.src,hgl888/chromium-crosswalk,Just-D/chromium-1,ltilve/chromium,Fireblend/chromium-crosswalk,chuan9/chromium-crosswalk,Chilledheart/chromium,dednal/chromium.src,Just-D/chromium-1,fujunwei/chromium-crosswalk,chuan9/chromium-crosswalk,markYoungH/chromium.src,ltilve/chromium,mohamed--abdel-maksoud/chromium.src,M4sse/chromium.src,Just-D/chromium-1,chuan9/chromium-crosswalk,Just-D/chromium-1,jaruba/chromium.src,PeterWangIntel/chromium-crosswalk,fujunwei/chromium-crosswalk,hgl888/chromium-crosswalk,hgl888/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,jaruba/chromium.src,Pluto-tv/chromium-crosswalk,krieger-od/nwjs_chromium.src,axinging/chromium-crosswalk,dednal/chromium.src,TheTypoMaster/chromium-crosswalk,chuan9/chromium-crosswalk,jaruba/chromium.src,Jonekee/chromium.src,dushu1203/chromium.src,dednal/chromium.src,ltilve/chromium,TheTypoMaster/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,Fireblend/chromium-crosswalk,Just-D/chromium-1,fujunwei/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,Jonekee/chromium.src,krieger-od/nwjs_chromium.src,Pluto-tv/chromium-crosswalk,ltilve/chromium,Chilledheart/chromium,krieger-od/nwjs_chromium.src,axinging/chromium-crosswalk,markYoungH/chromium.src,jaruba/chromium.src,jaruba/chromium.src,dednal/chromium.src,markYoungH/chromium.src,M4sse/chromium.src,dednal/chromium.src,Jonekee/chromium.src,dushu1203/chromium.src,markYoungH/chromium.src,Chilledheart/chromium,dushu1203/chromium.src,M4sse/chromium.src,mohamed--abdel-maksoud/chromium.src,Chilledheart/chromium,Jonekee/chromium.src,Jonekee/chromium.src,Fireblend/chromium-crosswalk,chuan9/chromium-crosswalk,jaruba/chromium.src,dednal/chromium.src,chuan9/chromium-crosswalk,dushu1203/chromium.src,M4sse/chromium.src,krieger-od/nwjs_chromium.src,jaruba/chromium.src,PeterWangIntel/chromium-crosswalk,Just-D/chromium-1,mohamed--abdel-maksoud/chromium.src,axinging/chromium-crosswalk,Pluto-tv/chromium-crosswalk,hgl888/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,chuan9/chromium-crosswalk,Chilledheart/chromium,PeterWangIntel/chromium-crosswalk,Pluto-tv/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,krieger-od/nwjs_chromium.src,Pluto-tv/chromium-crosswalk,markYoungH/chromium.src,Fireblend/chromium-crosswalk,markYoungH/chromium.src,ltilve/chromium,PeterWangIntel/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,ltilve/chromium,Jonekee/chromium.src,axinging/chromium-crosswalk,axinging/chromium-crosswalk,hgl888/chromium-crosswalk,M4sse/chromium.src,Fireblend/chromium-crosswalk,krieger-od/nwjs_chromium.src,Just-D/chromium-1,Chilledheart/chromium,ltilve/chromium,dushu1203/chromium.src,chuan9/chromium-crosswalk,Chilledheart/chromium,Jonekee/chromium.src,krieger-od/nwjs_chromium.src,Pluto-tv/chromium-crosswalk,Just-D/chromium-1,Fireblend/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,fujunwei/chromium-crosswalk,jaruba/chromium.src,chuan9/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,Jonekee/chromium.src,dushu1203/chromium.src,Jonekee/chromium.src,dushu1203/chromium.src,M4sse/chromium.src,dushu1203/chromium.src,fujunwei/chromium-crosswalk,dushu1203/chromium.src,ltilve/chromium,dednal/chromium.src,Chilledheart/chromium,mohamed--abdel-maksoud/chromium.src,fujunwei/chromium-crosswalk,M4sse/chromium.src,mohamed--abdel-maksoud/chromium.src,Pluto-tv/chromium-crosswalk,M4sse/chromium.src,M4sse/chromium.src,Just-D/chromium-1,TheTypoMaster/chromium-crosswalk,axinging/chromium-crosswalk,M4sse/chromium.src,dednal/chromium.src,markYoungH/chromium.src,PeterWangIntel/chromium-crosswalk