CL for perf tryjob on android

third_party/WebKit/Source/core/layout/HitTestCache.cpp

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/HitTestCache.h"
 
 #include "public/platform/Platform.h"
 
 namespace blink {
 
@@ skipping 10 matching lines @@
                 if (hitResult.hitTestRequest().equalForCacheability(cachedItem.hitTestRequest())) {
                     metric = HitHistogramMetric::HIT_EXACT_MATCH;
                     result = true;
                     hitResult = cachedItem;
                     break;
                 }
                 metric = HitHistogramMetric::MISS_VALIDITY_RECT_MATCHES;
             }
         }
     }
-    Platform::current()->histogramEnumeration("Event.HitTest", static_cast<int>(metric), static_cast<int>(HitHistogramMetric::MAX_HIT_METRIC));
+    static Platform::HistogramCacheSlot histogram_cache = 0;
+    Platform::current()->histogramEnumeration("Event.HitTest", static_cast<int>(metric), static_cast<int>(HitHistogramMetric::MAX_HIT_METRIC), &histogram_cache);
     return result;
 }
 
 void HitTestCache::addCachedResult(const HitTestResult& result, uint64_t domTreeVersion)
 {
     if (!result.isCacheable())
         return;
 
     // If the result was a hit test on an LayoutPart and the request allowed
     // querying of the layout part; then the part hasn't been loaded yet.
@@ skipping 21 matching lines @@
     m_updateIndex = 0;
     m_items.clear();
 }
 
 DEFINE_TRACE(HitTestCache)
 {
     visitor->trace(m_items);
 }
 
 } // namespace blink