Remove tr.b.dictionaryContainsValue.

tracing/tracing/base/iteration_helpers.html

Index: tracing/tracing/base/iteration_helpers.html
diff --git a/tracing/tracing/base/iteration_helpers.html b/tracing/tracing/base/iteration_helpers.html
index 18e5eb8e7a638cdec5f6191a3252cb63bca5157d..d57d912ee7dc39f561f354a8da294a30df5bfef9 100644
--- a/tracing/tracing/base/iteration_helpers.html
+++ b/tracing/tracing/base/iteration_helpers.html
@@ -103,15 +103,6 @@ tr.exportTo('tr.b', function() {
     return result;
   }
 
-  function dictionaryContainsValue(dict, value) {
-    for (const key in dict) {
-      if (dict[key] === value) {
-        return true;
-      }
-    }
-    return false;
-  }
-
   /**
    * Returns a new Map with items grouped by the return value of the
    * specified function being called on each item.
@@ -347,7 +338,6 @@ tr.exportTo('tr.b', function() {
     concatenateObjects,
     compareArrays,
     comparePossiblyUndefinedValues,
-    dictionaryContainsValue,
     getOnlyElement,
     getFirstElement,
     groupIntoMap,