Update Browser useragent string to reflect WebKit merge at r64264
Update Browser useragent string to reflect WebKit merge at r64264

Change-Id: Ic29d7b918b179d99c16150bd0aec2f09d5707408

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base