Displays GL call parameters, textures, screen captures and shader source.
Server code is in frameworks/base/opengl/libs/GLES2_dbg.
Protobuf code is generated using generate_debugger_message_proto.py in server code.
Change-Id: Ibe105b60dbe59af84f721c077d2c138a4d04767e
Signed-off-by: David Li <davidxli@google.com>