Make counter and histogram related callbacks part of the Isolate::CreateParams.

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 6785 matching lines @@
     isolate->set_snapshot_blob(i::Snapshot::DefaultSnapshotBlob());
   }
   if (params.entry_hook) {
     isolate->set_function_entry_hook(params.entry_hook);
   }
   if (params.code_event_handler) {
     isolate->InitializeLoggingAndCounters();
     isolate->logger()->SetCodeEventHandler(kJitCodeEventDefault,
                                            params.code_event_handler);
   }
+  if (params.counter_lookup_callback) {
+    v8_isolate->SetCounterFunction(params.counter_lookup_callback);
+  }
+
+  if (params.create_histogram_callback) {
+    v8_isolate->SetCreateHistogramFunction(params.create_histogram_callback);
+  }
+
+  if (params.add_histogram_sample_callback) {
+    v8_isolate->SetAddHistogramSampleFunction(
+        params.add_histogram_sample_callback);
+  }
   SetResourceConstraints(isolate, params.constraints);
   // TODO(jochen): Once we got rid of Isolate::Current(), we can remove this.
   Isolate::Scope isolate_scope(v8_isolate);
   if (params.entry_hook || !i::Snapshot::Initialize(isolate)) {
     // If the isolate has a function entry hook, it needs to re-build all its
     // code stubs with entry hooks embedded, so don't deserialize a snapshot.
     if (i::Snapshot::EmbedsScript(isolate)) {
       // If the snapshot embeds a script, we cannot initialize the isolate
       // without the snapshot as a fallback. This is unlikely to happen though.
       V8_Fatal(__FILE__, __LINE__,
@@ skipping 1201 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal