Restricts Zoom on Double Click
Restricts Zoom on Double Click

BUG=128

Review URL: https://codereview.appspot.com/6651057
danbeam/catapult,dstockwell/catapult,scottmcmaster/catapult,benschmaus/catapult,catapult-project/catapult-csm,scottmcmaster/catapult,benschmaus/catapult,SummerLW/Perf-Insight-Report,benschmaus/catapult,SummerLW/Perf-Insight-Report,catapult-project/catapult,0x90sled/catapult,modulexcite/catapult,catapult-project/catapult,vmpstr/trace-viewer,vmpstr/trace-viewer,zeptonaut/catapult,vmpstr/trace-viewer,sahiljain/catapult,danbeam/catapult,danbeam/catapult,catapult-project/catapult,sahiljain/catapult,sahiljain/catapult,catapult-project/catapult,SummerLW/Perf-Insight-Report,benschmaus/catapult,catapult-project/catapult-csm,modulexcite/catapult,danbeam/catapult,catapult-project/catapult-csm,catapult-project/catapult,benschmaus/catapult,zeptonaut/catapult,catapult-project/catapult,benschmaus/catapult,benschmaus/catapult,sahiljain/catapult,catapult-project/catapult-csm,sahiljain/catapult,catapult-project/catapult,dstockwell/catapult,catapult-project/catapult-csm,scottmcmaster/catapult,SummerLW/Perf-Insight-Report,modulexcite/catapult,dstockwell/catapult,dstockwell/catapult,SummerLW/Perf-Insight-Report,SummerLW/Perf-Insight-Report,catapult-project/catapult-csm,catapult-project/catapult-csm,sahiljain/catapult,0x90sled/catapult,zeptonaut/catapult,0x90sled/catapult