Split TemplateHashMapImpl::Lookup into two methods

src/bootstrapper.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/code-stubs.h"
 #include "src/extensions/externalize-string-extension.h"
@@ skipping 2496 matching lines @@
 
 static uint32_t Hash(RegisteredExtension* extension) {
   return v8::internal::ComputePointerHash(extension);
 }
 
 
 Genesis::ExtensionStates::ExtensionStates() : map_(HashMap::PointersMatch, 8) {}
 
 Genesis::ExtensionTraversalState Genesis::ExtensionStates::get_state(
     RegisteredExtension* extension) {
-  i::HashMap::Entry* entry = map_.Lookup(extension, Hash(extension), false);
+  i::HashMap::Entry* entry = map_.Lookup(extension, Hash(extension));
   if (entry == NULL) {
     return UNVISITED;
   }
   return static_cast<ExtensionTraversalState>(
       reinterpret_cast<intptr_t>(entry->value));
 }
 
 void Genesis::ExtensionStates::set_state(RegisteredExtension* extension,
                                          ExtensionTraversalState state) {
-  map_.Lookup(extension, Hash(extension), true)->value =
+  map_.LookupOrInsert(extension, Hash(extension))->value =
       reinterpret_cast<void*>(static_cast<intptr_t>(state));
 }
 
 
 bool Genesis::InstallExtensions(Handle<Context> native_context,
                                 v8::ExtensionConfiguration* extensions) {
   Isolate* isolate = native_context->GetIsolate();
   ExtensionStates extension_states;  // All extensions have state UNVISITED.
   return InstallAutoExtensions(isolate, &extension_states) &&
       (!FLAG_expose_free_buffer ||
@@ skipping 426 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 } }  // namespace v8::internal