Move hashmap into base/.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index a1d0e887dbe21d512a9115520ad9cd423ea8be6e..f2c3a9dcd9b8fdd3e8d96afd6d6d7ec282ae2694 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -359,9 +359,9 @@ class ThreadLocalTop BASE_EMBEDDED {
 
 #if USE_SIMULATOR
 
-#define ISOLATE_INIT_SIMULATOR_LIST(V)                                         \
-  V(bool, simulator_initialized, false)                                        \
-  V(HashMap*, simulator_i_cache, NULL)                                         \
+#define ISOLATE_INIT_SIMULATOR_LIST(V)       \
+  V(bool, simulator_initialized, false)      \
+  V(base::HashMap*, simulator_i_cache, NULL) \
   V(Redirection*, simulator_redirection, NULL)
 #else
 
@@ -407,8 +407,8 @@ typedef List<HeapObject*> DebugObjectCache;
   V(DebugObjectCache*, string_stream_debug_object_cache, NULL)                 \
   V(Object*, string_stream_current_security_token, NULL)                       \
   V(ExternalReferenceTable*, external_reference_table, NULL)                   \
-  V(HashMap*, external_reference_map, NULL)                                    \
-  V(HashMap*, root_index_map, NULL)                                            \
+  V(base::HashMap*, external_reference_map, NULL)                              \
+  V(base::HashMap*, root_index_map, NULL)                                      \
   V(int, pending_microtask_count, 0)                                           \
   V(HStatistics*, hstatistics, NULL)                                           \
   V(CompilationStatistics*, turbo_statistics, NULL)                            \