[regexp] Add use counters for slow exec and replace calls

Plumb through new V8 use counters.

V8 CL: https://crrev.com/c/1873698

Bug: v8:5577
Change-Id: I6e57be213c50d27c3c5fabe873532f3e43be95ba
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1875250
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708940}

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

@@ -2445,6 +2445,8 @@ enum WebFeature {
   kDecompressionStreamConstructor = 3061,
   kV8RTCRtpReceiver_PlayoutDelayHint_AttributeGetter = 3062,
   kV8RTCRtpReceiver_PlayoutDelayHint_AttributeSetter = 3063,
+  kV8RegExpExecCalledOnSlowRegExp = 3064,
+  kV8RegExpReplaceCalledOnSlowRegExp = 3065,
 
   // 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/bindings/core/v8/use_counter_callback.cc

@@ -234,6 +234,12 @@ void UseCounterCallback(v8::Isolate* isolate,
     case v8::Isolate::kCallSiteAPIGetThisSloppyCall:
       blink_feature = WebFeature::kV8CallSiteAPIGetThisSloppyCall;
       break;
+    case v8::Isolate::kRegExpExecCalledOnSlowRegExp:
+      blink_feature = WebFeature::kV8RegExpExecCalledOnSlowRegExp;
+      break;
+    case v8::Isolate::kRegExpReplaceCalledOnSlowRegExp:
+      blink_feature = WebFeature::kV8RegExpReplaceCalledOnSlowRegExp;
+      break;
     default:
       // This can happen if V8 has added counters that this version of Blink
       // does not know about. It's harmless.

tools/metrics/histograms/enums.xml

@@ -25159,6 +25159,8 @@ Called by update_net_error_codes.py.-->
   <int value="3061" label="DecompressionStreamConstructor"/>
   <int value="3062" label="V8RTCRtpReceiver_PlayoutDelayHint_AttributeGetter"/>
   <int value="3063" label="V8RTCRtpReceiver_PlayoutDelayHint_AttributeSetter"/>
+  <int value="3064" label="V8RegExpExecCalledOnSlowRegExp"/>
+  <int value="3065" label="V8RegExpReplaceCalledOnSlowRegExp"/>
 </enum>
 
 <enum name="FeaturePolicyAllowlistType">