cppgc: Typo and signature fix

Change-Id: I4e2a0ddbeba68a4cc136bb6d56383b0a7e4f1dff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2388107
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69661}

include/cppgc/heap.h

@@ -84,7 +84,7 @@ class V8_EXPORT Heap {
     std::vector<std::unique_ptr<CustomSpaceBase>> custom_spaces;
 
     /**
-     * Specifies whether conserative stack scan is supported. When conservative
+     * Specifies whether conservative stack scan is supported. When conservative
      * stack scan is not supported, the collector may try to invoke
      * garbage collections using non-nestable task, which are guaranteed to have
      * no interesting stack, through the provided Platform. If such tasks are

include/cppgc/internal/prefinalizer-handler.h

@@ -18,7 +18,7 @@ class V8_EXPORT PreFinalizerRegistrationDispatcher final {
     void* object;
     PreFinalizerCallback callback;
 
-    bool operator==(const PreFinalizer& other);
+    bool operator==(const PreFinalizer& other) const;
   };
 
   static void RegisterPrefinalizer(PreFinalizer pre_finalizer);

src/heap/cppgc/prefinalizer-handler.cc

@@ -25,7 +25,7 @@ void PreFinalizerRegistrationDispatcher::RegisterPrefinalizer(
 }
 
 bool PreFinalizerRegistrationDispatcher::PreFinalizer::operator==(
-    const PreFinalizer& other) {
+    const PreFinalizer& other) const {
   return (object == other.object) && (callback == other.callback);
 }