Add use counters for lots of DOM APIs.

third_party/WebKit/Source/core/timing/Performance.idl

Index: third_party/WebKit/Source/core/timing/Performance.idl
diff --git a/third_party/WebKit/Source/core/timing/Performance.idl b/third_party/WebKit/Source/core/timing/Performance.idl
index bfe27d59c1af6f4ba218339a13fae22fab82eea3..505130ecd4d8f7accdbce7190a22c78a24e42927 100644
--- a/third_party/WebKit/Source/core/timing/Performance.idl
+++ b/third_party/WebKit/Source/core/timing/Performance.idl
@@ -47,9 +47,9 @@ interface Performance : EventTarget {
 
     // Resource Timing
     // https://w3c.github.io/resource-timing/#extensions-performance-interface
-    void clearResourceTimings();
-    void setResourceTimingBufferSize(unsigned long maxSize);
-    attribute EventHandler onresourcetimingbufferfull;
+    [Measure] void clearResourceTimings();
+    [Measure] void setResourceTimingBufferSize(unsigned long maxSize);
+    [Measure] attribute EventHandler onresourcetimingbufferfull;
 
     // TODO(ksakamoto): Remove these prefixed APIs.
     [DeprecateAs=PrefixedPerformanceClearResourceTimings, ImplementedAs=clearResourceTimings] void webkitClearResourceTimings();