Revert of [Mirror Android] Temporarily remove the Mirror flag. (https://codereview.chromium.org/294393008/)
Revert of [Mirror Android] Temporarily remove the Mirror flag. (https://codereview.chromium.org/294393008/)

Reason for revert:
The removal of the flag landed to M36 as https://src.chromium.org/viewvc/chrome?revision=273283&view=revision

Reverting the change (== introducing the Android Mirror flag back) on the trunk.

Original issue's description:
> [Mirror Android] Temporarily remove the Mirror flag.
> 
> Once in trunk this needs to be picked up to M36 beta branch.
> Once picked up by the branch, this needs to be reverted on trunk.
> 
> BUG=378025
> NOTRY=True
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=273067

TBR=tedchoc@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=378025

Review URL: https://codereview.chromium.org/294393013

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@273287 0039d316-1c4b-4281-b951-d872f2087c98

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