Add use counters for lots of DOM APIs.

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

Index: third_party/WebKit/Source/core/timing/WorkerPerformance.idl
diff --git a/third_party/WebKit/Source/core/timing/WorkerPerformance.idl b/third_party/WebKit/Source/core/timing/WorkerPerformance.idl
index c36253860743c987724a057a971a2135620f8092..59f366dec1acaed5aa4856d080ec5df246cc2db7 100644
--- a/third_party/WebKit/Source/core/timing/WorkerPerformance.idl
+++ b/third_party/WebKit/Source/core/timing/WorkerPerformance.idl
@@ -36,28 +36,28 @@
 [
     NoInterfaceObject
 ] interface WorkerPerformance : EventTarget {
-    DOMHighResTimeStamp now();
+    [Measure] DOMHighResTimeStamp now();
 
     // Performance Timeline
     // https://w3c.github.io/performance-timeline/#the-performance-interface
     // TODO(foolip): getEntries() should take an optional FilterOptions argument.
-    PerformanceEntryList getEntries();
-    PerformanceEntryList getEntriesByType(DOMString entryType);
-    PerformanceEntryList getEntriesByName(DOMString name, optional DOMString entryType = null);
+    [Measure] PerformanceEntryList getEntries();
+    [Measure] PerformanceEntryList getEntriesByType(DOMString entryType);
+    [Measure] PerformanceEntryList getEntriesByName(DOMString name, optional DOMString entryType = null);
 
     // 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;
 
     // User Timing
     // https://w3c.github.io/user-timing/#extensions-performance-interface
-    [RaisesException] void mark(DOMString markName);
-    void clearMarks(optional DOMString markName = null);
+  [Measure, RaisesException] void mark(DOMString markName);
+    [Measure] void clearMarks(optional DOMString markName = null);
 
-    [RaisesException] void measure(DOMString measureName, optional DOMString startMark = null, optional DOMString endMark = null);
-    void clearMeasures(optional DOMString measureName = null);
+  [Measure, RaisesException] void measure(DOMString measureName, optional DOMString startMark = null, optional DOMString endMark = null);
+    [Measure] void clearMeasures(optional DOMString measureName = null);
 
     // TODO(foolip): There is no spec for the Memory Info API, see blink-dev:
     // https://groups.google.com/a/chromium.org/d/msg/blink-dev/g5YRCGpC9vs/b4OJz71NmPwJ