Add extended attribute, [Measure], to simplify use counting

Source/bindings/scripts/v8_utilities.py

Index: Source/bindings/scripts/v8_utilities.py
diff --git a/Source/bindings/scripts/v8_utilities.py b/Source/bindings/scripts/v8_utilities.py
index c4935d79d17f692a3c5eba27ac07d598fc5a8d93..a9aa9c6e8e3297342247a9895b9eb9188d5383d6 100644
--- a/Source/bindings/scripts/v8_utilities.py
+++ b/Source/bindings/scripts/v8_utilities.py
@@ -367,12 +367,20 @@ def cpp_name_or_partial(interface):
 
 
 # [MeasureAs]
-def measure_as(definition_or_member):
+def measure_as(definition_or_member, interface=None):
     extended_attributes = definition_or_member.extended_attributes
-    if 'MeasureAs' not in extended_attributes:
+    if 'DoNotMeasure' in extended_attributes:
         return None
-    includes.add('core/frame/UseCounter.h')
-    return extended_attributes['MeasureAs']
+    if 'MeasureAs' in extended_attributes:
+        includes.add('core/frame/UseCounter.h')
+        return lambda suffix: extended_attributes['MeasureAs']
+    if 'Measure' in extended_attributes or (interface is not None and 'Measure' in interface.extended_attributes):
+        includes.add('core/frame/UseCounter.h')
+        measure_as_name = capitalize(definition_or_member.name)
+        if interface is not None:
+            measure_as_name = '%s_%s' % (capitalize(interface.name), measure_as_name)
+        return lambda suffix: 'V8%s_%s' % (measure_as_name, suffix)
+    return None
 
 
 # [PerContextEnabled]