[wasm] Do not expose OnFinishedUnit(s)

The method is only called from module-compiler.cc, hence we can call it
on {CompilationStateImpl} directly and do not need to expose it.

R=mstarzinger@chromium.org
CC=frgossen@google.com

Change-Id: I72dcd7b109cfdb0b3fd78be635c482289c69dd9e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1587389Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61086}

src/wasm/compilation-environment.h

@@ -122,9 +122,6 @@ class CompilationState {
   V8_EXPORT_PRIVATE bool baseline_compilation_finished() const;
   V8_EXPORT_PRIVATE bool top_tier_compilation_finished() const;
 
-  void OnFinishedUnit(WasmCode*);
-  void OnFinishedUnits(Vector<WasmCode*>);
-
  private:
   friend class NativeModule;
   friend class WasmCompilationUnit;

src/wasm/module-compiler.cc

@@ -338,7 +338,6 @@ class CompilationStateImpl {
   std::unique_ptr<WasmCompilationUnit> GetNextCompilationUnit(
       int task_id, CompileBaselineOnly baseline_only);
 
-  void OnFinishedUnit(WasmCode*);
   void OnFinishedUnits(Vector<WasmCode*>);
 
   void OnBackgroundTaskStopped(int task_id, const WasmFeatures& detected);
@@ -497,14 +496,6 @@ bool CompilationState::top_tier_compilation_finished() const {
   return Impl(this)->top_tier_compilation_finished();
 }
 
-void CompilationState::OnFinishedUnit(WasmCode* code) {
-  Impl(this)->OnFinishedUnit(code);
-}
-
-void CompilationState::OnFinishedUnits(Vector<WasmCode*> code_vector) {
-  Impl(this)->OnFinishedUnits(code_vector);
-}
-
 // static
 std::unique_ptr<CompilationState> CompilationState::New(
     const std::shared_ptr<NativeModule>& native_module,
@@ -2036,10 +2027,6 @@ CompilationStateImpl::GetNextCompilationUnit(
   return compilation_unit_queues_.GetNextUnit(task_id, baseline_only);
 }
 
-void CompilationStateImpl::OnFinishedUnit(WasmCode* code) {
-  OnFinishedUnits({&code, 1});
-}
-
 void CompilationStateImpl::OnFinishedUnits(Vector<WasmCode*> code_vector) {
   base::MutexGuard guard(&callbacks_mutex_);