Heap profiler: allow returning aggregated snapshots via the new API.

src/profile-generator-inl.h

Index: src/profile-generator-inl.h
diff --git a/src/profile-generator-inl.h b/src/profile-generator-inl.h
index 0c50581ab795ef2c3793a98f9c3b2c3324461a09..cef825da8a64745481e7eff4736901b18d2b5c30 100644
--- a/src/profile-generator-inl.h
+++ b/src/profile-generator-inl.h
@@ -35,6 +35,16 @@
 namespace v8 {
 namespace internal {
 
+const char* StringsStorage::GetFunctionName(String* name) {
+  return GetFunctionName(GetName(name));
+}
+
+
+const char* StringsStorage::GetFunctionName(const char* name) {
+  return strlen(name) > 0 ? name : ProfileGenerator::kAnonymousFunctionName;
+}
+
+
 CodeEntry::CodeEntry(int security_token_id)
     : call_uid_(0),
       tag_(Logger::FUNCTION_TAG),
@@ -97,13 +107,21 @@ void CodeMap::DeleteCode(Address addr) {
 }
 
 
-const char* CpuProfilesCollection::GetFunctionName(String* name) {
-  return GetFunctionName(GetName(name));
-}
-
-
-const char* CpuProfilesCollection::GetFunctionName(const char* name) {
-  return strlen(name) > 0 ? name : ProfileGenerator::kAnonymousFunctionName;
+template<class Visitor>
+void HeapEntriesMap::UpdateEntries(Visitor* visitor) {
+  for (HashMap::Entry* p = entries_.Start();
+       p != NULL;
+       p = entries_.Next(p)) {
+    if (!IsAlias(p->value)) {
+      EntryInfo* entry_info = reinterpret_cast<EntryInfo*>(p->value);
+      entry_info->entry = visitor->GetEntry(
+          reinterpret_cast<HeapObject*>(p->key),
+          entry_info->children_count,
+          entry_info->retainers_count);
+      entry_info->children_count = 0;
+      entry_info->retainers_count = 0;
+    }
+  }
 }