Try to unbreak the webkit canary bots.

gclient.py

Index: gclient.py
===================================================================
--- gclient.py	(revision 118001)
+++ gclient.py	(working copy)
@@ -930,6 +930,12 @@
         # Support for --revision 123
         revision = '%s@%s' % (solutions_names[index], revision)
       sol, rev = revision.split('@', 1)
+
+      if not sol in solutions_names and sol == 'trunk':
+        print >> sys.stderr, 'Rewriting "trunk" to "src" in --revision'
+        # Fix attempt for http://crbug.com/108515
+        sol = 'src'
+
       if not sol in solutions_names:
         #raise gclient_utils.Error('%s is not a valid solution.' % sol)
         print >> sys.stderr, ('Please fix your script, having invalid '