Use a statically linked libhwui for testing.

platform_tools/android/gyp_gen/tool_makefile_writer.py

 #!/usr/bin/python
 
 # Copyright 2014 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Code for generating Android.mk for a tool."""
 
 
@@ skipping 24 matching lines @@
   with open(target_file, 'w') as f:
     f.write(makefile_writer.AUTOGEN_WARNING)
 
     f.write(makefile_writer.LOCAL_PATH)
     f.write(makefile_writer.CLEAR_VARS)
 
     makefile_writer.write_local_vars(f, var_dict, False, None)
 
     f.write(SKIA_RESOURCES)
     f.write('include $(LOCAL_PATH)/../skia_static_deps.mk\n')
+    if 'libhwui_static' in var_dict['LOCAL_STATIC_LIBRARIES']:
+      f.write('include frameworks/base/libs/hwui/hwui_static_deps.mk\n')
     f.write('include $(BUILD_NATIVE_TEST)\n')
 
 
 def generate_tool(gyp_dir, target_file, skia_trunk, dest_dir,
                   skia_lib_var_dict, local_module_name, local_module_tags,
                   desired_targets, gyp_source_dir=None):
   """Common steps for building one of the skia tools.
 
   Parse a gyp file and create an Android.mk for this tool.
 
@@ skipping 43 matching lines @@
     full_dest = os.path.join(skia_trunk, dest_dir)
   else:
     full_dest = dest_dir
 
   # If the path does not exist, create it. This will happen during testing,
   # where there is no subdirectory for each tool (just a temporary folder).
   if not os.path.exists(full_dest):
     os.mkdir(full_dest)
 
   write_tool_android_mk(target_dir=full_dest, var_dict=var_dict)