Fix annotation test to use new assert pattern
Fix annotation test to use new assert pattern

Review URL: https://codereview.appspot.com/223440044

danbeam/catapult,scottmcmaster/catapult,catapult-project/catapult-csm,benschmaus/catapult,SummerLW/Perf-Insight-Report,dstockwell/catapult,zeptonaut/catapult,sahiljain/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult-csm,0x90sled/catapult,catapult-project/catapult-csm,scottmcmaster/catapult,sahiljain/catapult,modulexcite/catapult,sahiljain/catapult,catapult-project/catapult,catapult-project/catapult,vmpstr/trace-viewer,modulexcite/catapult,danbeam/catapult,sahiljain/catapult,catapult-project/catapult-csm,dstockwell/catapult,danbeam/catapult,benschmaus/catapult,sahiljain/catapult,modulexcite/catapult,vmpstr/trace-viewer,dstockwell/catapult,sahiljain/catapult,catapult-project/catapult,benschmaus/catapult,SummerLW/Perf-Insight-Report,dstockwell/catapult,SummerLW/Perf-Insight-Report,SummerLW/Perf-Insight-Report,benschmaus/catapult,zeptonaut/catapult,vmpstr/trace-viewer,0x90sled/catapult,scottmcmaster/catapult,catapult-project/catapult-csm,zeptonaut/catapult,danbeam/catapult,catapult-project/catapult,SummerLW/Perf-Insight-Report,SummerLW/Perf-Insight-Report,catapult-project/catapult-csm,catapult-project/catapult,benschmaus/catapult,benschmaus/catapult,0x90sled/catapult,benschmaus/catapult,catapult-project/catapult-csm