Refactor Histogram relationship diagnostics.

tracing/tracing/value/histogram_set.py

Index: tracing/tracing/value/histogram_set.py
diff --git a/tracing/tracing/value/histogram_set.py b/tracing/tracing/value/histogram_set.py
index e06a4d02e4e488c44c7e9d7c6f0443bc3de707b8..b60010d02c0a11bcabe24ed1a29776d35093c58a 100644
--- a/tracing/tracing/value/histogram_set.py
+++ b/tracing/tracing/value/histogram_set.py
@@ -51,20 +51,8 @@ class HistogramSet(object):
     return self._shared_diagnostics_by_guid.get(guid)
 
   def ResolveRelatedHistograms(self):
-    histograms = self
-    def HandleDiagnosticMap(dm):
-      for diag in dm.itervalues():
-        if isinstance(diag, histogram_module.RelatedHistogramMap):
-          diag.Resolve(histograms)
-
     for hist in self:
       hist.diagnostics.ResolveSharedDiagnostics(self)
-      HandleDiagnosticMap(hist.diagnostics)
-      for dm in hist.nan_diagnostic_maps:
-        HandleDiagnosticMap(dm)
-      for hbin in hist.bins:
-        for dm in hbin.diagnostic_maps:
-          HandleDiagnosticMap(dm)
 
   def __len__(self):
     return len(self._histograms_by_guid)