Use the sources.jar for tools-common instead of the environment variable. Change-Id: Ia1a3e8c32f66610e761bacce08c7eb5915e7ed0f
Layoutlib is a custom version of the android View framework designed to run inside Eclipse. The goal of the library is to provide layout rendering in Eclipse that are very very close to their rendering on devices. None of the com.android.* or android.* classes in layoutlib run on devices.