[Telemetry] Add StoryExpectations to loading.desktop; disabling uol.com story on lin…

tools/perf/benchmarks/loading.py

Index: tools/perf/benchmarks/loading.py
diff --git a/tools/perf/benchmarks/loading.py b/tools/perf/benchmarks/loading.py
index 7c9540ae70e8257f2da4f239baed354a53d357cf..8af2d3203c25ae045699c53f5e7623a9dce2033f 100644
--- a/tools/perf/benchmarks/loading.py
+++ b/tools/perf/benchmarks/loading.py
@@ -37,6 +37,9 @@ class LoadingDesktop(_LoadingBase):
         cache_temperatures=[cache_temperature.PCV1_COLD,
                             cache_temperature.PCV1_WARM,])
 
+  def GetExpectations(self):
+    return page_sets.LoadingDesktopExpectations()
+
   @classmethod
   def Name(cls):
     return 'loading.desktop'