Move hashmap into base/.

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index ea25bdb69869208c12021b3c6ba1bf4e663efd56..24ba976d44f9e091845ecf66bcbaf783ae504f44 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -502,11 +502,10 @@ void Heap::RepairFreeListsAfterDeserialization() {
   }
 }
 
-
 void Heap::MergeAllocationSitePretenuringFeedback(
-    const HashMap& local_pretenuring_feedback) {
+    const base::HashMap& local_pretenuring_feedback) {
   AllocationSite* site = nullptr;
-  for (HashMap::Entry* local_entry = local_pretenuring_feedback.Start();
+  for (base::HashMap::Entry* local_entry = local_pretenuring_feedback.Start();
        local_entry != nullptr;
        local_entry = local_pretenuring_feedback.Next(local_entry)) {
     site = reinterpret_cast<AllocationSite*>(local_entry->key);
@@ -535,8 +534,8 @@ void Heap::MergeAllocationSitePretenuringFeedback(
 class Heap::PretenuringScope {
  public:
   explicit PretenuringScope(Heap* heap) : heap_(heap) {
-    heap_->global_pretenuring_feedback_ =
-        new HashMap(HashMap::PointersMatch, kInitialFeedbackCapacity);
+    heap_->global_pretenuring_feedback_ = new base::HashMap(
+        base::HashMap::PointersMatch, kInitialFeedbackCapacity);
   }
 
   ~PretenuringScope() {
@@ -562,7 +561,7 @@ void Heap::ProcessPretenuringFeedback() {
 
     // Step 1: Digest feedback for recorded allocation sites.
     bool maximum_size_scavenge = MaximumSizeScavenge();
-    for (HashMap::Entry* e = global_pretenuring_feedback_->Start();
+    for (base::HashMap::Entry* e = global_pretenuring_feedback_->Start();
          e != nullptr; e = global_pretenuring_feedback_->Next(e)) {
       allocation_sites++;
       site = reinterpret_cast<AllocationSite*>(e->key);