Add Search.SOURCE to android-common
Add Search.SOURCE to android-common

Part of http://b/issue?id=2429556

Change-Id: I1e37e092c8a1319d5f703b065dba8a6fbde31db5

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