Updating Native Client (should fix the Linux x64 build)

DEPS

Index: DEPS
===================================================================
--- DEPS	(revision 27917)
+++ DEPS	(working copy)
@@ -40,7 +40,7 @@
     "http://v8.googlecode.com/svn/trunk@2997",
 
   "src/native_client":
-    "http://nativeclient.googlecode.com/svn/trunk/src/native_client@804",
+    "http://nativeclient.googlecode.com/svn/trunk/src/native_client@819",
 
   "src/third_party/skia":
     "http://skia.googlecode.com/svn/trunk@364",
@@ -198,4 +198,11 @@
                "src/build/win/clobber_generated_headers.py",
                "$matching_files"],
   },
+  {
+    # Workaround XCode dependecies problem.
+    # TODO(bradnelson): remove this when fixed.
+    "pattern": ".",
+    "action": ["python",
+               "src/build/mac/clobber_generated_headers.py"],
+  },
 ]