Re-enable disabled size asserts in ppapi_tests test_struct_sizes.cc.

ppapi/tests/arch_dependent_sizes_64.h

Index: ppapi/tests/arch_dependent_sizes_64.h
diff --git a/ppapi/tests/arch_dependent_sizes_64.h b/ppapi/tests/arch_dependent_sizes_64.h
index 2ac17409d1cdfc0ed0fde9a5aa0875fdf8fdc4f3..bd3030044eb21710d333418f5b21e6be7d0520dd 100644
--- a/ppapi/tests/arch_dependent_sizes_64.h
+++ b/ppapi/tests/arch_dependent_sizes_64.h
@@ -11,11 +11,8 @@
 
 #include "ppapi/tests/test_struct_sizes.c"
 
-// TODO(jschuh): Resolve ILP64 to LLP64 issue. crbug.com/177779
-#if !defined(_WIN64)
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(GLintptr, 8);
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(GLsizeiptr, 8);
-#endif
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_CompletionCallback_Func, 8);
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_URLLoaderTrusted_StatusCallback, 8);
 PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_CompletionCallback, 24);