Dynamically generate a heading for Extension Docs API pages

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

Index: chrome/common/extensions/docs/server2/cron_servlet.py
diff --git a/chrome/common/extensions/docs/server2/cron_servlet.py b/chrome/common/extensions/docs/server2/cron_servlet.py
index 188475d242afbe45b5bfae87b5cfeab9550a3576..df3c16e06814d99d5dcd8666eab558bd9c9b8b83 100644
--- a/chrome/common/extensions/docs/server2/cron_servlet.py
+++ b/chrome/common/extensions/docs/server2/cron_servlet.py
@@ -46,6 +46,9 @@ class CronServlet(Servlet):
     def CreateHostFileSystemForBranchAndRevision(self, branch, revision):
       return SubversionFileSystem.Create(branch, revision=revision)
 
+    def CreateFileSystemForBranch(self, branch):
+      return SubversionFileSystem.Create(branch)
+
     def CreateAppSamplesFileSystem(self, object_store_creator):
       # TODO(kalman): CachingFileSystem wrapper for GithubFileSystem, but it's
       # not supported yet (see comment there).
@@ -217,7 +220,7 @@ class CronServlet(Servlet):
   def _GetBranchForChannel(self, channel):
     object_store_creator = self._CreateObjectStoreCreator(channel)
     return (self._delegate.CreateBranchUtility(object_store_creator)
-        .GetBranchForChannel(channel))
+        .GetChannelInfo(channel).branch)
 
   def _CreateServerInstance(self, channel, revision):
     object_store_creator = self._CreateObjectStoreCreator(channel)
@@ -231,9 +234,17 @@ class CronServlet(Servlet):
     compiled_host_fs_factory = CompiledFileSystem.Factory(
         host_file_system,
         object_store_creator)
+    branch_utility = self._delegate.CreateBranchUtility(object_store_creator)
+    def create_file_system(version):
+      return CachingFileSystem(
+          self._delegate.CreateFileSystemForBranch(
+              branch_utility.GetBranchForVersion(version)),
+          object_store_creator)
     return ServerInstance(channel,
                           object_store_creator,
                           host_file_system,
                           app_samples_file_system,
                           '' if channel == 'stable' else '/%s' % channel,
-                          compiled_host_fs_factory)
+                          compiled_host_fs_factory,
+                          branch_utility,
+                          create_file_system)