[TTS] Fix a UMA Histogram name typo.

Typo from https://chromium-review.googlesource.com/959445.

Bug: 802963
Change-Id: Ide52935d3a4b2bdbf2d3f29cf67893bd7b54ce10
Reviewed-on: https://chromium-review.googlesource.com/985131Reviewed-by: Donn Denman <donnd@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Donn Denman <donnd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548112}

chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchUma.java

@@ -1369,7 +1369,7 @@ public class ContextualSearchUma {
      */
     static void logRankerFeaturesAvailable(boolean areOutcomes) {
         RecordHistogram.recordBooleanHistogram(
-                "Search.ContextualSearch.Ranker.eaturesAvailable", areOutcomes);
+                "Search.ContextualSearch.Ranker.FeaturesAvailable", areOutcomes);
     }
 
     /**