docserver: Adds "API scheduled for Chrome version..." text to dev and beta APIs

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

Index: chrome/common/extensions/docs/server2/availability_finder.py
diff --git a/chrome/common/extensions/docs/server2/availability_finder.py b/chrome/common/extensions/docs/server2/availability_finder.py
index 31564d1c30a3ac10a22342af25ec60befff70760..60edd372d011d426028f5dac2b22013de5779344 100644
--- a/chrome/common/extensions/docs/server2/availability_finder.py
+++ b/chrome/common/extensions/docs/server2/availability_finder.py
@@ -208,6 +208,21 @@ class AvailabilityFinder(object):
                                           file_system,
                                           channel_info)
 
+  def _FindScheduled(self, api_name):
+    '''Determines the earliest version of Chrome where the API is stable.
+    Unlike the code in GetApiAvailability, this checks if the API is stable
+    even when Chrome is in dev or beta, which shows that the API is scheduled
+    to be stable in that verison of Chrome.
+    '''
+    def check_scheduled(file_system, channel_info):
+      return self._CheckStableAvailability(
+          api_name, file_system, channel_info.version)
+
+    stable_availability = self._file_system_iterator.Descending(
+        self._branch_utility.GetChannelInfo('dev'), check_scheduled)
+
+    return stable_availability.version if stable_availability else None
+
   def GetApiAvailability(self, api_name):
     '''Performs a search for an API's top-level availability by using a
     HostFileSystemIterator instance to traverse multiple version of the
@@ -232,6 +247,12 @@ class AvailabilityFinder(object):
     if availability is None:
       # The API wasn't available on 'dev', so it must be a 'trunk'-only API.
       availability = self._branch_utility.GetChannelInfo('trunk')
+
+    # If the API is not stable, check if it is stable in the dev or beta
+    # versions of Chrome. This means that the API is scheduled to be stable.
+    if availability.channel != 'stable':
+      availability.scheduled = self._FindScheduled(api_name)
+
     self._top_level_object_store.Set(api_name, availability)
     return availability