[iwyu] Fix allocation-site-scopes.h

R=marja@chromium.org

Bug: v8:7965
Change-Id: I596712f55266c245f4df9e2fc7670e518f3e9d52
Reviewed-on: https://chromium-review.googlesource.com/c/1303294Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57060}

src/allocation-site-scopes-inl.h

@@ -12,6 +12,13 @@
 namespace v8 {
 namespace internal {
 
+void AllocationSiteContext::InitializeTraversal(Handle<AllocationSite> site) {
+  top_ = site;
+  // {current_} is updated in place to not create unnecessary Handles, hence
+  // we initially need a separate handle.
+  current_ = Handle<AllocationSite>::New(*top_, isolate());
+}
+
 Handle<AllocationSite> AllocationSiteUsageContext::EnterNewScope() {
   if (top().is_null()) {
     InitializeTraversal(top_site_);

src/allocation-site-scopes.h

@@ -33,12 +33,7 @@ class AllocationSiteContext {
     *(current_.location()) = site;
   }
 
-  void InitializeTraversal(Handle<AllocationSite> site) {
-    top_ = site;
-    // {current_} is updated in place to not create unnecessary Handles, hence
-    // we initially need a separate handle.
-    current_ = Handle<AllocationSite>::New(*top_, isolate());
-  }
+  inline void InitializeTraversal(Handle<AllocationSite> site);
 
  private:
   Isolate* isolate_;

tools/generate-header-include-checks.py

@@ -29,7 +29,6 @@ AUTO_EXCLUDE = [
   # flag-definitions.h needs a mode set for being included.
   'src/flag-definitions.h',
   # blacklist of headers we need to fix (https://crbug.com/v8/7965).
-  'src/allocation-site-scopes.h',
   'src/compiler/allocation-builder.h',
   'src/compiler/js-context-specialization.h',
   'src/compiler/raw-machine-assembler.h',