CL for perf tryjob on android

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

Index: third_party/WebKit/Source/core/layout/LayoutView.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutView.cpp b/third_party/WebKit/Source/core/layout/LayoutView.cpp
index 88186a58e368e7f72fe904e233c96f6eefafdf0e..e3eed1bdb83e9777312224a305e06fa06cf7202b 100644
--- a/third_party/WebKit/Source/core/layout/LayoutView.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutView.cpp
@@ -66,7 +66,13 @@ public:
     ~HitTestLatencyRecorder()
     {
         int duration = static_cast<int>((WTF::monotonicallyIncreasingTime() - m_start) * 1000000);
-        Platform::current()->histogramCustomCounts(m_allowsChildFrameContent ? "Event.Latency.HitTestRecursive" : "Event.Latency.HitTest", duration, 0, 10000000, 100);
+        if (m_allowsChildFrameContent) {
+          static Platform::HistogramCacheSlot histogram_cache = 0;
+          Platform::current()->histogramCustomCounts("Event.Latency.HitTestRecursive", duration, 0, 10000000, 100, &histogram_cache);
+        } else {
+          static Platform::HistogramCacheSlot histogram_cache = 0;
+          Platform::current()->histogramCustomCounts("Event.Latency.HitTest", duration, 0, 10000000, 100, &histogram_cache);
+        }
     }
 
 private: