Add KeyChain to core product defintion since Browser depends on it
Add KeyChain to core product defintion since Browser depends on it

Change-Id: I7c8ca42565875e72c7297c41d8bcb9cf1c1b4664

knone1/platform_manifest,pranav01/platform_manifest,xorware/android_build,xorware/android_build,ND-3500/platform_manifest,xorware/android_build,xorware/android_build,xorware/android_build,Hybrid-Power/startsync,RR-msm7x30/platform_manifest,hagar006/platform_manifest,see4ri/lolili,fallouttester/platform_manifest