Ensure isActiveTile is on the tile object.
Ensure isActiveTile is on the tile object.

This patch ensures that we move the args.isActiveTile parameter to
the tile directly.

TBR=nduca
BUG=591

Review URL: https://codereview.appspot.com/123650043
danbeam/catapult,modulexcite/catapult,dstockwell/catapult,catapult-project/catapult,SummerLW/Perf-Insight-Report,modulexcite/catapult,vmpstr/trace-viewer,danbeam/catapult,benschmaus/catapult,sahiljain/catapult,danbeam/catapult,catapult-project/catapult-csm,0x90sled/catapult,modulexcite/catapult,catapult-project/catapult,vmpstr/trace-viewer,SummerLW/Perf-Insight-Report,dstockwell/catapult,0x90sled/catapult,SummerLW/Perf-Insight-Report,catapult-project/catapult,SummerLW/Perf-Insight-Report,vmpstr/trace-viewer,catapult-project/catapult,sahiljain/catapult,catapult-project/catapult-csm,sahiljain/catapult,sahiljain/catapult,0x90sled/catapult,SummerLW/Perf-Insight-Report,catapult-project/catapult,scottmcmaster/catapult,catapult-project/catapult-csm,catapult-project/catapult-csm,benschmaus/catapult,scottmcmaster/catapult,catapult-project/catapult-csm,catapult-project/catapult,catapult-project/catapult,zeptonaut/catapult,catapult-project/catapult-csm,sahiljain/catapult,scottmcmaster/catapult,zeptonaut/catapult,catapult-project/catapult-csm,benschmaus/catapult,benschmaus/catapult,danbeam/catapult,zeptonaut/catapult,benschmaus/catapult,SummerLW/Perf-Insight-Report,sahiljain/catapult,benschmaus/catapult,benschmaus/catapult,dstockwell/catapult,dstockwell/catapult