PNaCl: Build a PPAPI shims library for all architectures

ppapi/generators/idl_gen_pnacl.py

Index: ppapi/generators/idl_gen_pnacl.py
diff --git a/ppapi/generators/idl_gen_pnacl.py b/ppapi/generators/idl_gen_pnacl.py
index db514277dbecd5dfe53651ba93218e9eaa44c5ee..93291d8ab1f244cee93590fc677f6c2e8a23c9c4 100755
--- a/ppapi/generators/idl_gen_pnacl.py
+++ b/ppapi/generators/idl_gen_pnacl.py
@@ -51,6 +51,13 @@ class PnaclGen(WrapperGen):
     We do not generate the header files.  """
     return 'ppapi/generators/pnacl_shim.h'
 
+  def GetGuardStart(self):
+    return ('\n/* The PNaCl PPAPI shims are only needed on x86-64. */\n'
+            '#if defined(__x86_64__)\n\n')
+
+  def GetGuardEnd(self):
+    return '\n#endif\n'
+
   def InterfaceNeedsWrapper(self, iface, releases):
     """Return true if the interface has ANY methods that need wrapping.
     """