Use a TitleWatcher to make test less flaky
Use a TitleWatcher to make test less flaky

In the IFrameUsingDocumentWriteShouldNotCrash test, sometimes the title
wasn't immediatly updated after navigation. The best choice is to make
use of a title watcher instead of directly comparing.

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inakids/crosswalk,seanlong/crosswalk,jondong/crosswalk,mrunalk/crosswalk,rakuco/crosswalk,lincsoon/crosswalk,rakuco/crosswalk,bestwpw/crosswalk,leonhsl/crosswalk,TheDirtyCalvinist/spacewalk,TheDirtyCalvinist/spacewalk,Bysmyyr/crosswalk,zliang7/crosswalk,marcuspridham/crosswalk,jpike88/crosswalk,hgl888/crosswalk-efl,shaochangbin/crosswalk,crosswalk-project/crosswalk,huningxin/crosswalk,ZhengXinCN/crosswalk,lincsoon/crosswalk,PeterWangIntel/crosswalk,dreamsxin/crosswalk,xzhan96/crosswalk,jondong/crosswalk,darktears/crosswalk,shaochangbin/crosswalk,stonegithubs/crosswalk,hgl888/crosswalk-efl,XiaosongWei/crosswalk,pk-sam/crosswalk,chuan9/crosswalk,weiyirong/crosswalk-1,stonegithubs/crosswalk,heke123/crosswalk,axinging/crosswalk,Bysmyyr/crosswalk,chinakids/crosswalk,seanlong/crosswalk,jondwillis/crosswalk,Bysmyyr/crosswalk,tedshroyer/crosswalk,Pluto-tv/crosswalk,hgl888/crosswalk,bestwpw/crosswalk,siovene/crosswalk,Bysmyyr/crosswalk,dreamsxin/crosswalk,alex-zhang/crosswalk,RafuCater/crosswalk,jpike88/crosswalk,darktears/crosswalk,weiyirong/crosswalk-1,wuhengzhi/crosswalk,chinakids/crosswalk,Pluto-tv/crosswalk,seanlong/crosswalk,tomatell/crosswalk,RafuCater/crosswalk,zliang7/crosswalk,crosswalk-project/crosswalk,RafuCater/crosswalk,Pluto-tv/crosswalk,zeropool/crosswalk,qjia7/crosswalk,crosswalk-project/crosswalk-efl,leonhsl/crosswalk,RafuCater/crosswalk,qjia7/crosswalk,tomatell/crosswalk,kurli/crosswalk,axinging/crosswalk,zliang7/crosswalk,fujunwei/crosswalk,myroot/crosswalk,Pluto-tv/crosswalk,qjia7/crosswalk,crosswalk-project/crosswalk,hgl888/crosswalk,amaniak/crosswalk,fujunwei/crosswalk,siovene/crosswalk,chuan9/crosswalk,zeropool/crosswalk,myroot/crosswalk,baleboy/crosswalk,shaochangbin/crosswalk,lincsoon/crosswalk,jondong/crosswalk,baleboy/crosswalk,darktears/crosswalk