Add UseCounters for all 'Date' IDL attributes

- As for input.valueAsDate, add separated counters for the getter and
  the setter.
- file.lastModifiedDate already has a counter.

Bug: 988353
Change-Id: Ia5fa197705698c0e3465c079b77f8d8d426c6cdb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1943068Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#720110}

third_party/blink/public/mojom/web_feature/web_feature.mojom

@@ -2486,6 +2486,10 @@ enum WebFeature {
   kMessageEventSharedArrayBufferSameAgentCluster = 3105,
   kMessageEventSharedArrayBufferDifferentAgentCluster = 3106,
   kCacheStorageCodeCacheHint = 3107,
+  kV8Metadata_ModificationTime_AttributeGetter = 3108,
+  kV8RTCLegacyStatsReport_Timestamp_AttributeGetter = 3109,
+  kInputElementValueAsDateGetter = 3110,
+  kInputElementValueAsDateSetter = 3111,
 
   // Add new features immediately above this line. Don't change assigned
   // numbers of any item, and don't reuse removed slots.

third_party/blink/renderer/core/html/forms/html_input_element.cc

@@ -1199,6 +1199,7 @@ void HTMLInputElement::UpdateView() {
 }
 
 ScriptValue HTMLInputElement::valueAsDate(ScriptState* script_state) const {
+  UseCounter::Count(GetDocument(), WebFeature::kInputElementValueAsDateGetter);
   // TODO(crbug.com/988343): InputType::ValueAsDate() should return
   // base::Optional<base::Time>.
   double date = input_type_->ValueAsDate();
@@ -1211,6 +1212,7 @@ ScriptValue HTMLInputElement::valueAsDate(ScriptState* script_state) const {
 void HTMLInputElement::setValueAsDate(ScriptState* script_state,
                                       const ScriptValue& value,
                                       ExceptionState& exception_state) {
+  UseCounter::Count(GetDocument(), WebFeature::kInputElementValueAsDateSetter);
   base::Optional<base::Time> date =
       NativeValueTraits<IDLDateOrNull>::NativeValue(
           script_state->GetIsolate(), value.V8Value(), exception_state);

third_party/blink/renderer/modules/filesystem/metadata.idl

@@ -32,6 +32,6 @@
 [
     NoInterfaceObject
 ] interface Metadata {
-    [CallWith=ScriptState] readonly attribute object modificationTime;
+    [CallWith=ScriptState, Measure] readonly attribute object modificationTime;
     readonly attribute unsigned long long size;
 };

third_party/blink/renderer/modules/peerconnection/rtc_legacy_stats_report.idl

@@ -26,7 +26,7 @@
 [
     NoInterfaceObject
 ] interface RTCLegacyStatsReport {
-    [CallWith=ScriptState] readonly attribute object timestamp;
+    [CallWith=ScriptState, Measure] readonly attribute object timestamp;
     readonly attribute DOMString id;
     readonly attribute DOMString type;
     DOMString stat(DOMString name);

tools/metrics/histograms/enums.xml

@@ -25604,6 +25604,10 @@ Called by update_net_error_codes.py.-->
   <int value="3105" label="MessageEventSharedArrayBufferSameAgentCluster"/>
   <int value="3106" label="MessageEventSharedArrayBufferDifferentAgentCluster"/>
   <int value="3107" label="CacheStorageCodeCacheHint"/>
+  <int value="3108" label="V8Metadata_ModificationTime_AttributeGetter"/>
+  <int value="3109" label="V8RTCLegacyStatsReport_Timestamp_AttributeGetter"/>
+  <int value="3110" label="InputElementValueAsDateGetter"/>
+  <int value="3111" label="InputElementValueAsDateSetter"/>
 </enum>
 
 <enum name="FeaturePolicyAllowlistType">