NaCl: Conditionalise copying of IRT library based on "disable_nacl" flag

chrome/chrome_exe.gypi

Index: chrome/chrome_exe.gypi
diff --git a/chrome/chrome_exe.gypi b/chrome/chrome_exe.gypi
index 3089092898f837bbe702e90c18acd270d65eca67..5c3c1cb5d1253e2edc455fdee81a68f7c5800e84 100644
--- a/chrome/chrome_exe.gypi
+++ b/chrome/chrome_exe.gypi
@@ -148,15 +148,6 @@
         'chrome_exe_target': 1,
         'use_system_xdg_utils%': 0,
       },
-      'copies': [
-        {
-          'destination': '<(PRODUCT_DIR)',
-          'files': [
-            '../native_client/irt_binaries/nacl_irt_x86_32.nexe',
-            '../native_client/irt_binaries/nacl_irt_x86_64.nexe',
-          ],
-        },
-      ],
       'conditions': [
         ['OS=="linux" or OS=="freebsd" or OS=="openbsd"', {
           'actions': [
@@ -472,6 +463,17 @@
             },
           },
         }],
+        ['disable_nacl!=1', {
+          'copies': [
+            {
+              'destination': '<(PRODUCT_DIR)',
+              'files': [
+                '../native_client/irt_binaries/nacl_irt_x86_32.nexe',
+                '../native_client/irt_binaries/nacl_irt_x86_64.nexe',
+              ],
+            },
+          ],
+        }],
       ],
     },
     {