[wasm][cleanup] Remove single-user NativeModule::Free method

This method only has a single user, and can be implemented in a few
lines, so just inline it.

R=ahaas@chromium.org

Bug: v8:8015
Change-Id: I26247d97ebb939274fa72cc5441e8c2e0c6bc869
Reviewed-on: https://chromium-review.googlesource.com/1245743Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56239}

src/wasm/wasm-code-manager.cc

@@ -999,10 +999,14 @@ void WasmCodeManager::FreeNativeModule(NativeModule* native_module) {
   DCHECK_EQ(1, native_modules_.count(native_module));
   native_modules_.erase(native_module);
   TRACE_HEAP("Freeing NativeModule %p\n", this);
-  for (auto& vmem : native_module->owned_code_space_) {
-    lookup_map_.erase(vmem.address());
-    Free(&vmem);
-    DCHECK(!vmem.IsReserved());
+  for (auto& mem : native_module->owned_code_space_) {
+    DCHECK(mem.IsReserved());
+    TRACE_HEAP("VMem Release: %" PRIxPTR ":%" PRIxPTR " (%zu)\n", mem.address(),
+               mem.end(), mem.size());
+    lookup_map_.erase(mem.address());
+    memory_tracker_->ReleaseReservation(mem.size());
+    mem.Free();
+    DCHECK(!mem.IsReserved());
   }
   native_module->owned_code_space_.clear();
 
@@ -1044,16 +1048,6 @@ WasmCode* WasmCodeManager::LookupCode(Address pc) const {
   return candidate ? candidate->Lookup(pc) : nullptr;
 }
 
-void WasmCodeManager::Free(VirtualMemory* mem) {
-  DCHECK(mem->IsReserved());
-  void* start = reinterpret_cast<void*>(mem->address());
-  void* end = reinterpret_cast<void*>(mem->end());
-  size_t size = mem->size();
-  mem->Free();
-  memory_tracker_->ReleaseReservation(size);
-  TRACE_HEAP("VMem Release: %p:%p (%zu)\n", start, end, size);
-}
-
 size_t WasmCodeManager::remaining_uncommitted_code_space() const {
   return remaining_uncommitted_code_space_.load();
 }

src/wasm/wasm-code-manager.h

@@ -477,7 +477,6 @@ class V8_EXPORT_PRIVATE WasmCodeManager final {
   // There's no separate Uncommit.
 
   void FreeNativeModule(NativeModule*);
-  void Free(VirtualMemory* mem);
   void AssignRanges(Address start, Address end, NativeModule*);
   void AssignRangesAndAddModule(Address start, Address end, NativeModule*);
   bool ShouldForceCriticalMemoryPressureNotification();