[NaCl SDK] nacl_mounts: wrap functions.

native_client_sdk/src/libraries/gtest_ppapi/library.dsc

 {
   'TOOLS': ['newlib', 'glibc', 'win', 'linux'],
   'TARGETS': [
     {
       'NAME' : 'gtest_ppapi',
       # gtest-typed-test.h:239:47: error: anonymous variadic macros were introduced in C99 [-Werror=variadic-macros]
       'CXXFLAGS': ['-Wno-variadic-macros'],
       'TYPE' : 'lib',
       'SOURCES' : [
         "gtest_event_listener.cc",
         "gtest_instance.cc",
         "gtest_module.cc",
         "gtest_nacl_environment.cc",
         "gtest_runner.cc",
       ],
     }
   ],
   'HEADERS': [
     {
       'FILES': [
         "gtest_event_listener.h",
         "gtest_instance.h",
+        "gtest_module.h",
         "gtest_nacl_environment.h",
         "gtest_runner.h",
         "thread_condition.h",
       ],
       'DEST': 'include/gtest_ppapi',
     },
   ],
   'DEST': 'testlibs',
   'NAME': 'gtest_ppapi',
 }