Devserver: run the cron over the examples.

chrome/common/extensions/docs/server2/fake_fetchers.py

Index: chrome/common/extensions/docs/server2/fake_fetchers.py
diff --git a/chrome/common/extensions/docs/server2/fake_fetchers.py b/chrome/common/extensions/docs/server2/fake_fetchers.py
index a35e1d977832f1f817e046e14d264a4e0bbd22af..e7a13d632e4a32e4a2b449d92c77d77ed9965490 100644
--- a/chrome/common/extensions/docs/server2/fake_fetchers.py
+++ b/chrome/common/extensions/docs/server2/fake_fetchers.py
@@ -56,12 +56,12 @@ class FakeSubversionServer(_FakeFetcher):
             html.append('<a>' + f + '</a>')
         html.append('</html>')
         return '\n'.join(html)
-      except OSError:
-        raise FileNotFoundError(path)
+      except OSError as e:
+        raise FileNotFoundError('Listing %s failed: %s' (path, e))
     try:
       return self._ReadFile(path)
-    except IOError:
-      raise FileNotFoundError(path)
+    except IOError as e:
+      raise FileNotFoundError('Reading %s failed: %s' (path, e))
 
 class FakeViewvcServer(_FakeFetcher):
   def __init__(self, base_path):
@@ -86,8 +86,8 @@ class FakeViewvcServer(_FakeFetcher):
       return '\n'.join(html)
     try:
       return self._ReadFile(path)
-    except IOError:
-      raise FileNotFoundError(path)
+    except IOError as e:
+      raise FileNotFoundError('Reading %s failed: %s' % (path, e))
 
 class FakeGithubStat(_FakeFetcher):
   def fetch(self, url):