Non-SFI Mode: Build shared_memory_support_nacl library for nacl_helper_nonsfi.

This CL is to build the libshared_memory_support_nacl.a for nacl_helper_nonsfi.
The library is not used yet, but will be used soon in following CLs.
Also, it should be built successfully now.

BUG=358465
TEST=Ran trybots. Implement nacl_helper_nonsfi on top of this CL, and made sure it works.

Review URL: https://codereview.chromium.org/656063003

Cr-Commit-Position: refs/heads/master@{#300459}

components/nacl_nonsfi.gyp

@@ -42,6 +42,7 @@
                 'extra_deps_newlib32_nonsfi': [
                   '>(tc_lib_dir_nonsfi_helper32)/libbase_nacl_nonsfi.a',
                   '>(tc_lib_dir_nonsfi_helper32)/libevent_nacl_nonsfi.a',
+                  '>(tc_lib_dir_nonsfi_helper32)/libshared_memory_support_nacl.a',
                 ],
               }],
             ],
@@ -51,6 +52,11 @@
             '../native_client/src/nonsfi/irt/irt.gyp:nacl_sys_private',
             '../native_client/src/untrusted/nacl/nacl.gyp:nacl_lib_newlib',
             '../native_client/tools.gyp:prep_toolchain',
+
+            # Temporarily depends on some libraries to make sure they can be
+            # built properly. These are depended on by PPAPI library.
+            # TODO(hidehiko): Remove them when PPAPI library is introduced.
+            '../media/media_nacl.gyp:shared_memory_support_nacl',
           ],
         },
         # TODO(hidehiko): Add Non-SFI version of nacl_loader_unittests.

media/media_nacl.gyp

@@ -21,10 +21,13 @@
             'build_glibc': 0,
             'build_newlib': 0,
             'build_irt': 1,
+            'build_pnacl_newlib': 0,
+            'build_nonsfi_helper': 1,
           },
           'dependencies': [
-            '../native_client/tools.gyp:prep_toolchain',
             '../base/base_nacl.gyp:base_nacl',
+            '../base/base_nacl.gyp:base_nacl_nonsfi',
+            '../native_client/tools.gyp:prep_toolchain',
           ],
           'defines': [
             'MEDIA_IMPLEMENTATION',