Switching NaCl IRT to be built inside the chrome build.

chrome/build_nacl_irt.py

Index: chrome/build_nacl_irt.py
===================================================================
--- chrome/build_nacl_irt.py	(revision 97950)
+++ chrome/build_nacl_irt.py	(working copy)
@@ -60,6 +60,23 @@
                          stdout=subprocess.PIPE,
                          stderr=subprocess.PIPE)
     (p_stdout, p_stderr) = p.communicate()
+    # If things fail on windows, try running --help, if that fails,
+    # emit this script as an input (to satiate gyp), and assume we're being
+    # run on a test only bot.
+    # TODO(bradnelson): add plumbing to the buildbots to allow this script
+    #     to know its on a test only bot + make scons return a _particular_
+    #     return code so we can detect this kind of fail in one step.
+    if p.returncode != 0 and sys.platform == 'win32':
+      cmd = [sys.executable, 'scons.py', '--help']
+      p = subprocess.Popen(cmd, cwd=NACL_DIR,
+                           stdout=subprocess.PIPE,
+                           stderr=subprocess.PIPE)
+      (p_stdout, p_stderr) = p.communicate()
+      if p.returncode !=0:
+        # If scons can't even run, emit just this script as an input.
+        # See comment above this one.
+        print RelativePath(__file__, SCRIPT_DIR).replace(os.sep, '/')
+        return
     if p.returncode != 0:
       sys.exit(2)
     # Extract unique inputs.
@@ -89,7 +106,7 @@
     # (i.e. the file is outside the client).
     if RelativePath(nf, SRC_DIR).startswith('..' + os.sep):
       continue
-    rel_inputs.add(RelativePath(nf, SCRIPT_DIR))
+    rel_inputs.add(RelativePath(nf, SCRIPT_DIR).replace(os.sep, '/'))
   # Print it sorted.
   rel_inputs = sorted(list(rel_inputs))
   for f in rel_inputs: