Maintain API compatibility with older versions of V8.

test/cctest/test-heap-profiler.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 111 matching lines @@
       if (strcmp(contents, *node_name) == 0) return true;
     }
   }
   return false;
 }
 
 
 TEST(HeapSnapshot) {
   LocalContext env2;
   v8::HandleScope scope(env2->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env2->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "function A2() {}\n"
       "function B2(x) { return function() { return typeof x; }; }\n"
       "function C2(x) { this.x1 = x; this.x2 = x; this[1] = x; }\n"
       "var a2 = new A2();\n"
       "var b2_1 = new B2(a2), b2_2 = new B2(a2);\n"
       "var c2 = new C2(a2);");
   const v8::HeapSnapshot* snapshot_env2 =
-      heap_profiler->TakeHeapSnapshot(v8_str("env2"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("env2"));
   const v8::HeapGraphNode* global_env2 = GetGlobalObject(snapshot_env2);
 
   // Verify, that JS global object of env2 has '..2' properties.
   const v8::HeapGraphNode* a2_node =
       GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "a2");
   CHECK_NE(NULL, a2_node);
   CHECK_NE(
       NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "b2_1"));
   CHECK_NE(
       NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "b2_2"));
   CHECK_NE(NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "c2"));
 
   NamedEntriesDetector det;
   det.CheckAllReachables(const_cast<i::HeapEntry*>(
       reinterpret_cast<const i::HeapEntry*>(global_env2)));
   CHECK(det.has_A2);
   CHECK(det.has_B2);
   CHECK(det.has_C2);
 }
 
 
 TEST(HeapSnapshotObjectSizes) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   //   -a-> X1 --a
   // x -b-> X2 <-|
   CompileRun(
       "function X(a, b) { this.a = a; this.b = b; }\n"
       "x = new X(new X(), new X());\n"
       "dummy = new X();\n"
       "(function() { x.a.a = x.b; })();");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("sizes"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("sizes"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* x =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "x");
   CHECK_NE(NULL, x);
   const v8::HeapGraphNode* x1 =
       GetProperty(x, v8::HeapGraphEdge::kProperty, "a");
   CHECK_NE(NULL, x1);
   const v8::HeapGraphNode* x2 =
       GetProperty(x, v8::HeapGraphEdge::kProperty, "b");
   CHECK_NE(NULL, x2);
 
   // Test sizes.
   CHECK_NE(0, x->GetSelfSize());
   CHECK_NE(0, x1->GetSelfSize());
   CHECK_NE(0, x2->GetSelfSize());
 }
 
 
 TEST(BoundFunctionInSnapshot) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   CompileRun(
       "function myFunction(a, b) { this.a = a; this.b = b; }\n"
       "function AAAAA() {}\n"
       "boundFunction = myFunction.bind(new AAAAA(), 20, new Number(12)); \n");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("sizes"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("sizes"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* f =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "boundFunction");
   CHECK(f);
   CHECK_EQ(v8::String::New("native_bind"), f->GetName());
   const v8::HeapGraphNode* bindings =
       GetProperty(f, v8::HeapGraphEdge::kInternal, "bindings");
   CHECK_NE(NULL, bindings);
   CHECK_EQ(v8::HeapGraphNode::kArray, bindings->GetType());
   CHECK_EQ(4, bindings->GetChildrenCount());
@@ skipping 11 matching lines @@
   const v8::HeapGraphNode* bound_argument = GetProperty(
       f, v8::HeapGraphEdge::kShortcut, "bound_argument_1");
   CHECK(bound_argument);
   CHECK_EQ(v8::HeapGraphNode::kObject, bound_argument->GetType());
 }
 
 
 TEST(HeapSnapshotEntryChildren) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "function A() { }\n"
       "a = new A;");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("children"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("children"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   for (int i = 0, count = global->GetChildrenCount(); i < count; ++i) {
     const v8::HeapGraphEdge* prop = global->GetChild(i);
     CHECK_EQ(global, prop->GetFromNode());
   }
   const v8::HeapGraphNode* a =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "a");
   CHECK_NE(NULL, a);
   for (int i = 0, count = a->GetChildrenCount(); i < count; ++i) {
     const v8::HeapGraphEdge* prop = a->GetChild(i);
     CHECK_EQ(a, prop->GetFromNode());
   }
 }
 
 
 TEST(HeapSnapshotCodeObjects) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "function lazy(x) { return x - 1; }\n"
       "function compiled(x) { return x + 1; }\n"
       "var anonymous = (function() { return function() { return 0; } })();\n"
       "compiled(1)");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("code"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("code"));
 
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* compiled =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "compiled");
   CHECK_NE(NULL, compiled);
   CHECK_EQ(v8::HeapGraphNode::kClosure, compiled->GetType());
   const v8::HeapGraphNode* lazy =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "lazy");
   CHECK_NE(NULL, lazy);
   CHECK_EQ(v8::HeapGraphNode::kClosure, lazy->GetType());
@@ skipping 37 matching lines @@
     }
   }
   CHECK(compiled_references_x);
   CHECK(!lazy_references_x);
 }
 
 
 TEST(HeapSnapshotHeapNumbers) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   CompileRun(
       "a = 1;    // a is Smi\n"
       "b = 2.5;  // b is HeapNumber");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("numbers"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("numbers"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   CHECK_EQ(NULL, GetProperty(global, v8::HeapGraphEdge::kProperty, "a"));
   const v8::HeapGraphNode* b =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "b");
   CHECK_NE(NULL, b);
   CHECK_EQ(v8::HeapGraphNode::kHeapNumber, b->GetType());
 }
 
 TEST(HeapSnapshotSlicedString) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   CompileRun(
       "parent_string = \"123456789.123456789.123456789.123456789.123456789."
       "123456789.123456789.123456789.123456789.123456789."
       "123456789.123456789.123456789.123456789.123456789."
       "123456789.123456789.123456789.123456789.123456789.\";"
       "child_string = parent_string.slice(100);");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("strings"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("strings"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* parent_string =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "parent_string");
   CHECK_NE(NULL, parent_string);
   const v8::HeapGraphNode* child_string =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "child_string");
   CHECK_NE(NULL, child_string);
   const v8::HeapGraphNode* parent =
       GetProperty(child_string, v8::HeapGraphEdge::kInternal, "parent");
   CHECK_EQ(parent_string, parent);
 }
 
 TEST(HeapSnapshotInternalReferences) {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::HandleScope scope(isolate);
+  v8::HandleScope scope(v8::Isolate::GetCurrent());
   v8::Local<v8::ObjectTemplate> global_template = v8::ObjectTemplate::New();
   global_template->SetInternalFieldCount(2);
   LocalContext env(NULL, global_template);
   v8::Handle<v8::Object> global_proxy = env->Global();
   v8::Handle<v8::Object> global = global_proxy->GetPrototype().As<v8::Object>();
   CHECK_EQ(2, global->InternalFieldCount());
   v8::Local<v8::Object> obj = v8::Object::New();
   global->SetInternalField(0, v8_num(17));
   global->SetInternalField(1, obj);
-  v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler();
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("internals"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("internals"));
   const v8::HeapGraphNode* global_node = GetGlobalObject(snapshot);
   // The first reference will not present, because it's a Smi.
   CHECK_EQ(NULL, GetProperty(global_node, v8::HeapGraphEdge::kInternal, "0"));
   // The second reference is to an object.
   CHECK_NE(NULL, GetProperty(global_node, v8::HeapGraphEdge::kInternal, "1"));
 }
 
 
 // Trying to introduce a check helper for uint32_t causes many
 // overloading ambiguities, so it seems easier just to cast
 // them to a signed type.
 #define CHECK_EQ_SNAPSHOT_OBJECT_ID(a, b) \
   CHECK_EQ(static_cast<int32_t>(a), static_cast<int32_t>(b))
 #define CHECK_NE_SNAPSHOT_OBJECT_ID(a, b) \
   CHECK((a) != (b))  // NOLINT
 
 TEST(HeapSnapshotAddressReuse) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "function A() {}\n"
       "var a = [];\n"
       "for (var i = 0; i < 10000; ++i)\n"
       "  a[i] = new A();\n");
   const v8::HeapSnapshot* snapshot1 =
-      heap_profiler->TakeHeapSnapshot(v8_str("snapshot1"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("snapshot1"));
   v8::SnapshotObjectId maxId1 = snapshot1->GetMaxSnapshotJSObjectId();
 
   CompileRun(
       "for (var i = 0; i < 10000; ++i)\n"
       "  a[i] = new A();\n");
   HEAP->CollectAllGarbage(i::Heap::kNoGCFlags);
 
   const v8::HeapSnapshot* snapshot2 =
-      heap_profiler->TakeHeapSnapshot(v8_str("snapshot2"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("snapshot2"));
   const v8::HeapGraphNode* global2 = GetGlobalObject(snapshot2);
 
   const v8::HeapGraphNode* array_node =
       GetProperty(global2, v8::HeapGraphEdge::kProperty, "a");
   CHECK_NE(NULL, array_node);
   int wrong_count = 0;
   for (int i = 0, count = array_node->GetChildrenCount(); i < count; ++i) {
     const v8::HeapGraphEdge* prop = array_node->GetChild(i);
     if (prop->GetType() != v8::HeapGraphEdge::kElement)
       continue;
     v8::SnapshotObjectId id = prop->GetToNode()->GetId();
     if (id < maxId1)
       ++wrong_count;
   }
   CHECK_EQ(0, wrong_count);
 }
 
 
 TEST(HeapEntryIdsAndArrayShift) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "function AnObject() {\n"
       "    this.first = 'first';\n"
       "    this.second = 'second';\n"
       "}\n"
       "var a = new Array();\n"
       "for (var i = 0; i < 10; ++i)\n"
       "  a.push(new AnObject());\n");
   const v8::HeapSnapshot* snapshot1 =
-      heap_profiler->TakeHeapSnapshot(v8_str("s1"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("s1"));
 
   CompileRun(
       "for (var i = 0; i < 1; ++i)\n"
       "  a.shift();\n");
 
   HEAP->CollectAllGarbage(i::Heap::kNoGCFlags);
 
   const v8::HeapSnapshot* snapshot2 =
-      heap_profiler->TakeHeapSnapshot(v8_str("s2"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("s2"));
 
   const v8::HeapGraphNode* global1 = GetGlobalObject(snapshot1);
   const v8::HeapGraphNode* global2 = GetGlobalObject(snapshot2);
   CHECK_NE_SNAPSHOT_OBJECT_ID(0, global1->GetId());
   CHECK_EQ_SNAPSHOT_OBJECT_ID(global1->GetId(), global2->GetId());
 
   const v8::HeapGraphNode* a1 =
       GetProperty(global1, v8::HeapGraphEdge::kProperty, "a");
   CHECK_NE(NULL, a1);
   const v8::HeapGraphNode* k1 =
       GetProperty(a1, v8::HeapGraphEdge::kInternal, "elements");
   CHECK_NE(NULL, k1);
   const v8::HeapGraphNode* a2 =
       GetProperty(global2, v8::HeapGraphEdge::kProperty, "a");
   CHECK_NE(NULL, a2);
   const v8::HeapGraphNode* k2 =
       GetProperty(a2, v8::HeapGraphEdge::kInternal, "elements");
   CHECK_NE(NULL, k2);
 
   CHECK_EQ_SNAPSHOT_OBJECT_ID(a1->GetId(), a2->GetId());
   CHECK_EQ_SNAPSHOT_OBJECT_ID(k1->GetId(), k2->GetId());
 }
 
 TEST(HeapEntryIdsAndGC) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "function A() {}\n"
       "function B(x) { this.x = x; }\n"
       "var a = new A();\n"
       "var b = new B(a);");
   v8::Local<v8::String> s1_str = v8_str("s1");
   v8::Local<v8::String> s2_str = v8_str("s2");
   const v8::HeapSnapshot* snapshot1 =
-      heap_profiler->TakeHeapSnapshot(s1_str);
+      v8::HeapProfiler::TakeSnapshot(s1_str);
 
   HEAP->CollectAllGarbage(i::Heap::kNoGCFlags);
 
   const v8::HeapSnapshot* snapshot2 =
-      heap_profiler->TakeHeapSnapshot(s2_str);
+      v8::HeapProfiler::TakeSnapshot(s2_str);
 
   CHECK_GT(snapshot1->GetMaxSnapshotJSObjectId(), 7000);
   CHECK(snapshot1->GetMaxSnapshotJSObjectId() <=
         snapshot2->GetMaxSnapshotJSObjectId());
 
   const v8::HeapGraphNode* global1 = GetGlobalObject(snapshot1);
   const v8::HeapGraphNode* global2 = GetGlobalObject(snapshot2);
   CHECK_NE_SNAPSHOT_OBJECT_ID(0, global1->GetId());
   CHECK_EQ_SNAPSHOT_OBJECT_ID(global1->GetId(), global2->GetId());
   const v8::HeapGraphNode* A1 =
@@ skipping 27 matching lines @@
       GetProperty(global2, v8::HeapGraphEdge::kProperty, "b");
   CHECK_NE(NULL, b2);
   CHECK_NE_SNAPSHOT_OBJECT_ID(0, b1->GetId());
   CHECK_EQ_SNAPSHOT_OBJECT_ID(b1->GetId(), b2->GetId());
 }
 
 
 TEST(HeapSnapshotRootPreservedAfterSorting) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("s"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("s"));
   const v8::HeapGraphNode* root1 = snapshot->GetRoot();
   const_cast<i::HeapSnapshot*>(reinterpret_cast<const i::HeapSnapshot*>(
       snapshot))->GetSortedEntriesList();
   const v8::HeapGraphNode* root2 = snapshot->GetRoot();
   CHECK_EQ(root1, root2);
 }
 
 
 namespace {
 
@@ skipping 36 matching lines @@
  private:
   const char* data_;
   size_t length_;
 };
 
 }  // namespace
 
 TEST(HeapSnapshotJSONSerialization) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
 #define STRING_LITERAL_FOR_TEST \
   "\"String \\n\\r\\u0008\\u0081\\u0101\\u0801\\u8001\""
   CompileRun(
       "function A(s) { this.s = s; }\n"
       "function B(x) { this.x = x; }\n"
       "var a = new A(" STRING_LITERAL_FOR_TEST ");\n"
       "var b = new B(a);");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("json"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("json"));
   TestJSONStream stream;
   snapshot->Serialize(&stream, v8::HeapSnapshot::kJSON);
   CHECK_GT(stream.size(), 0);
   CHECK_EQ(1, stream.eos_signaled());
   i::ScopedVector<char> json(stream.size());
   stream.WriteTo(json);
 
   // Verify that snapshot string is valid JSON.
   AsciiResource json_res(json);
   v8::Local<v8::String> json_string = v8::String::NewExternal(&json_res);
@@ skipping 72 matching lines @@
       CompileRun(STRING_LITERAL_FOR_TEST)->ToString();
 #undef STRING_LITERAL_FOR_TEST
   CHECK_EQ(*v8::String::Utf8Value(ref_string),
            *v8::String::Utf8Value(string));
 }
 
 
 TEST(HeapSnapshotJSONSerializationAborting) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("abort"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("abort"));
   TestJSONStream stream(5);
   snapshot->Serialize(&stream, v8::HeapSnapshot::kJSON);
   CHECK_GT(stream.size(), 0);
   CHECK_EQ(0, stream.eos_signaled());
 }
 
 namespace {
 
 class TestStatsStream : public v8::OutputStream {
  public:
@@ skipping 45 matching lines @@
   int updates_written_;
   uint32_t entries_count_;
   uint32_t entries_size_;
   int intervals_count_;
   int first_interval_index_;
 };
 
 }  // namespace
 
 static TestStatsStream GetHeapStatsUpdate(
-    v8::HeapProfiler* heap_profiler,
     v8::SnapshotObjectId* object_id = NULL) {
   TestStatsStream stream;
-  v8::SnapshotObjectId last_seen_id = heap_profiler->GetHeapStats(&stream);
+  v8::SnapshotObjectId last_seen_id =
+      v8::HeapProfiler::PushHeapObjectsStats(&stream);
   if (object_id)
     *object_id = last_seen_id;
   CHECK_EQ(1, stream.eos_signaled());
   return stream;
 }
 
 
 TEST(HeapSnapshotObjectsStats) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
-  heap_profiler->StartTrackingHeapObjects();
+  v8::HeapProfiler::StartHeapObjectsTracking();
   // We have to call GC 6 times. In other case the garbage will be
   // the reason of flakiness.
   for (int i = 0; i < 6; ++i) {
     HEAP->CollectAllGarbage(i::Heap::kNoGCFlags);
   }
 
   v8::SnapshotObjectId initial_id;
   {
     // Single chunk of data expected in update. Initial data.
-    TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler,
-                                                      &initial_id);
+    TestStatsStream stats_update = GetHeapStatsUpdate(&initial_id);
     CHECK_EQ(1, stats_update.intervals_count());
     CHECK_EQ(1, stats_update.updates_written());
     CHECK_LT(0, stats_update.entries_size());
     CHECK_EQ(0, stats_update.first_interval_index());
   }
 
   // No data expected in update because nothing has happened.
   v8::SnapshotObjectId same_id;
-  CHECK_EQ(0, GetHeapStatsUpdate(heap_profiler, &same_id).updates_written());
+  CHECK_EQ(0, GetHeapStatsUpdate(&same_id).updates_written());
   CHECK_EQ_SNAPSHOT_OBJECT_ID(initial_id, same_id);
 
   {
     v8::SnapshotObjectId additional_string_id;
     v8::HandleScope inner_scope_1(env->GetIsolate());
     v8_str("string1");
     {
       // Single chunk of data with one new entry expected in update.
-      TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler,
-                                                        &additional_string_id);
+      TestStatsStream stats_update = GetHeapStatsUpdate(&additional_string_id);
       CHECK_LT(same_id, additional_string_id);
       CHECK_EQ(1, stats_update.intervals_count());
       CHECK_EQ(1, stats_update.updates_written());
       CHECK_LT(0, stats_update.entries_size());
       CHECK_EQ(1, stats_update.entries_count());
       CHECK_EQ(2, stats_update.first_interval_index());
     }
 
     // No data expected in update because nothing happened.
     v8::SnapshotObjectId last_id;
-    CHECK_EQ(0, GetHeapStatsUpdate(heap_profiler, &last_id).updates_written());
+    CHECK_EQ(0, GetHeapStatsUpdate(&last_id).updates_written());
     CHECK_EQ_SNAPSHOT_OBJECT_ID(additional_string_id, last_id);
 
     {
       v8::HandleScope inner_scope_2(env->GetIsolate());
       v8_str("string2");
 
       uint32_t entries_size;
       {
         v8::HandleScope inner_scope_3(env->GetIsolate());
         v8_str("string3");
         v8_str("string4");
 
         {
           // Single chunk of data with three new entries expected in update.
-          TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler);
+          TestStatsStream stats_update = GetHeapStatsUpdate();
           CHECK_EQ(1, stats_update.intervals_count());
           CHECK_EQ(1, stats_update.updates_written());
           CHECK_LT(0, entries_size = stats_update.entries_size());
           CHECK_EQ(3, stats_update.entries_count());
           CHECK_EQ(4, stats_update.first_interval_index());
         }
       }
 
       {
         // Single chunk of data with two left entries expected in update.
-        TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler);
+        TestStatsStream stats_update = GetHeapStatsUpdate();
         CHECK_EQ(1, stats_update.intervals_count());
         CHECK_EQ(1, stats_update.updates_written());
         CHECK_GT(entries_size, stats_update.entries_size());
         CHECK_EQ(1, stats_update.entries_count());
         // Two strings from forth interval were released.
         CHECK_EQ(4, stats_update.first_interval_index());
       }
     }
 
     {
       // Single chunk of data with 0 left entries expected in update.
-      TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler);
+      TestStatsStream stats_update = GetHeapStatsUpdate();
       CHECK_EQ(1, stats_update.intervals_count());
       CHECK_EQ(1, stats_update.updates_written());
       CHECK_EQ(0, stats_update.entries_size());
       CHECK_EQ(0, stats_update.entries_count());
       // The last string from forth interval was released.
       CHECK_EQ(4, stats_update.first_interval_index());
     }
   }
   {
     // Single chunk of data with 0 left entries expected in update.
-    TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler);
+    TestStatsStream stats_update = GetHeapStatsUpdate();
     CHECK_EQ(1, stats_update.intervals_count());
     CHECK_EQ(1, stats_update.updates_written());
     CHECK_EQ(0, stats_update.entries_size());
     CHECK_EQ(0, stats_update.entries_count());
     // The only string from the second interval was released.
     CHECK_EQ(2, stats_update.first_interval_index());
   }
 
   v8::Local<v8::Array> array = v8::Array::New();
   CHECK_EQ(0, array->Length());
   // Force array's buffer allocation.
   array->Set(2, v8_num(7));
 
   uint32_t entries_size;
   {
     // Single chunk of data with 2 entries expected in update.
-    TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler);
+    TestStatsStream stats_update = GetHeapStatsUpdate();
     CHECK_EQ(1, stats_update.intervals_count());
     CHECK_EQ(1, stats_update.updates_written());
     CHECK_LT(0, entries_size = stats_update.entries_size());
     // They are the array and its buffer.
     CHECK_EQ(2, stats_update.entries_count());
     CHECK_EQ(8, stats_update.first_interval_index());
   }
 
   for (int i = 0; i < 100; ++i)
     array->Set(i, v8_num(i));
 
   {
     // Single chunk of data with 1 entry expected in update.
-    TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler);
+    TestStatsStream stats_update = GetHeapStatsUpdate();
     CHECK_EQ(1, stats_update.intervals_count());
     // The first interval was changed because old buffer was collected.
     // The second interval was changed because new buffer was allocated.
     CHECK_EQ(2, stats_update.updates_written());
     CHECK_LT(entries_size, stats_update.entries_size());
     CHECK_EQ(2, stats_update.entries_count());
     CHECK_EQ(8, stats_update.first_interval_index());
   }
 
-  heap_profiler->StopTrackingHeapObjects();
+  v8::HeapProfiler::StopHeapObjectsTracking();
 }
 
 
 static void CheckChildrenIds(const v8::HeapSnapshot* snapshot,
                              const v8::HeapGraphNode* node,
                              int level, int max_level) {
   if (level > max_level) return;
   CHECK_EQ(node, snapshot->GetNodeById(node->GetId()));
   for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) {
     const v8::HeapGraphEdge* prop = node->GetChild(i);
     const v8::HeapGraphNode* child =
         snapshot->GetNodeById(prop->GetToNode()->GetId());
     CHECK_EQ_SNAPSHOT_OBJECT_ID(prop->GetToNode()->GetId(), child->GetId());
     CHECK_EQ(prop->GetToNode(), child);
     CheckChildrenIds(snapshot, child, level + 1, max_level);
   }
 }
 
 
 TEST(HeapSnapshotGetNodeById) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("id"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("id"));
   const v8::HeapGraphNode* root = snapshot->GetRoot();
   CheckChildrenIds(snapshot, root, 0, 3);
   // Check a big id, which should not exist yet.
   CHECK_EQ(NULL, snapshot->GetNodeById(0x1000000UL));
 }
 
 
 TEST(HeapSnapshotGetSnapshotObjectId) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   CompileRun("globalObject = {};\n");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("get_snapshot_object_id"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("get_snapshot_object_id"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* global_object =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "globalObject");
   CHECK(global_object);
 
   v8::Local<v8::Value> globalObjectHandle =
       env->Global()->Get(v8::String::New("globalObject"));
   CHECK(!globalObjectHandle.IsEmpty());
   CHECK(globalObjectHandle->IsObject());
 
-  v8::SnapshotObjectId id = heap_profiler->GetObjectId(globalObjectHandle);
+  v8::SnapshotObjectId id =
+      v8::HeapProfiler::GetSnapshotObjectId(globalObjectHandle);
   CHECK_NE(static_cast<int>(v8::HeapProfiler::kUnknownObjectId),
            id);
   CHECK_EQ(static_cast<int>(id), global_object->GetId());
 }
 
 
 TEST(HeapSnapshotUnknownSnapshotObjectId) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   CompileRun("globalObject = {};\n");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("unknown_object_id"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("unknown_object_id"));
   const v8::HeapGraphNode* node =
       snapshot->GetNodeById(v8::HeapProfiler::kUnknownObjectId);
   CHECK_EQ(NULL, node);
 }
 
 
 namespace {
 
 class TestActivityControl : public v8::ActivityControl {
  public:
@@ skipping 11 matching lines @@
   int done_;
   int total_;
   int abort_count_;
 };
 }
 
 TEST(TakeHeapSnapshotAborting) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
 
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
-  const int snapshots_count = heap_profiler->GetSnapshotCount();
+  const int snapshots_count = v8::HeapProfiler::GetSnapshotsCount();
   TestActivityControl aborting_control(1);
   const v8::HeapSnapshot* no_snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("abort"),
+      v8::HeapProfiler::TakeSnapshot(v8_str("abort"),
+                                     v8::HeapSnapshot::kFull,
                                      &aborting_control);
   CHECK_EQ(NULL, no_snapshot);
-  CHECK_EQ(snapshots_count, heap_profiler->GetSnapshotCount());
+  CHECK_EQ(snapshots_count, v8::HeapProfiler::GetSnapshotsCount());
   CHECK_GT(aborting_control.total(), aborting_control.done());
 
   TestActivityControl control(-1);  // Don't abort.
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("full"),
+      v8::HeapProfiler::TakeSnapshot(v8_str("full"),
+                                     v8::HeapSnapshot::kFull,
                                      &control);
   CHECK_NE(NULL, snapshot);
-  CHECK_EQ(snapshots_count + 1, heap_profiler->GetSnapshotCount());
+  CHECK_EQ(snapshots_count + 1, v8::HeapProfiler::GetSnapshotsCount());
   CHECK_EQ(control.total(), control.done());
   CHECK_GT(control.total(), 0);
 }
 
 
 namespace {
 
 class TestRetainedObjectInfo : public v8::RetainedObjectInfo {
  public:
   TestRetainedObjectInfo(int hash,
@@ skipping 73 matching lines @@
     }
   }
   return NULL;
 }
 
 
 TEST(HeapSnapshotRetainedObjectInfo) {
   LocalContext env;
   v8::Isolate* isolate = env->GetIsolate();
   v8::HandleScope scope(isolate);
-  v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler();
 
-  heap_profiler->SetWrapperClassInfoProvider(
+  v8::HeapProfiler::DefineWrapperClass(
       1, TestRetainedObjectInfo::WrapperInfoCallback);
-  heap_profiler->SetWrapperClassInfoProvider(
+  v8::HeapProfiler::DefineWrapperClass(
       2, TestRetainedObjectInfo::WrapperInfoCallback);
   v8::Persistent<v8::String> p_AAA =
       v8::Persistent<v8::String>::New(isolate, v8_str("AAA"));
   p_AAA.SetWrapperClassId(isolate, 1);
   v8::Persistent<v8::String> p_BBB =
       v8::Persistent<v8::String>::New(isolate, v8_str("BBB"));
   p_BBB.SetWrapperClassId(isolate, 1);
   v8::Persistent<v8::String> p_CCC =
       v8::Persistent<v8::String>::New(isolate, v8_str("CCC"));
   p_CCC.SetWrapperClassId(isolate, 2);
   CHECK_EQ(0, TestRetainedObjectInfo::instances.length());
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("retained"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("retained"));
 
   CHECK_EQ(3, TestRetainedObjectInfo::instances.length());
   for (int i = 0; i < TestRetainedObjectInfo::instances.length(); ++i) {
     CHECK(TestRetainedObjectInfo::instances[i]->disposed());
     delete TestRetainedObjectInfo::instances[i];
   }
 
   const v8::HeapGraphNode* native_group_aaa = GetNode(
       snapshot->GetRoot(), v8::HeapGraphNode::kSynthetic, "aaa-group");
   CHECK_NE(NULL, native_group_aaa);
@@ skipping 59 matching lines @@
   v8::Persistent<v8::Value> objects_[kObjectsCount];
   static GraphWithImplicitRefs* instance_;
 };
 
 GraphWithImplicitRefs* GraphWithImplicitRefs::instance_ = NULL;
 
 
 TEST(HeapSnapshotImplicitReferences) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   GraphWithImplicitRefs graph(&env);
   v8::V8::AddGCPrologueCallback(&GraphWithImplicitRefs::gcPrologue);
 
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("implicit_refs"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("implicit_refs"));
 
   const v8::HeapGraphNode* global_object = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* obj0 = GetProperty(
       global_object, v8::HeapGraphEdge::kProperty, "root_object");
   CHECK(obj0);
   CHECK_EQ(v8::HeapGraphNode::kObject, obj0->GetType());
   const v8::HeapGraphNode* obj1 = GetProperty(
       obj0, v8::HeapGraphEdge::kInternal, "native");
   CHECK(obj1);
   int implicit_targets_count = 0;
   for (int i = 0, count = obj1->GetChildrenCount(); i < count; ++i) {
     const v8::HeapGraphEdge* prop = obj1->GetChild(i);
     v8::String::AsciiValue prop_name(prop->GetName());
     if (prop->GetType() == v8::HeapGraphEdge::kInternal &&
         strcmp("native", *prop_name) == 0) {
       ++implicit_targets_count;
     }
   }
   CHECK_EQ(2, implicit_targets_count);
   v8::V8::RemoveGCPrologueCallback(&GraphWithImplicitRefs::gcPrologue);
 }
 
 
 TEST(DeleteAllHeapSnapshots) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
-  CHECK_EQ(0, heap_profiler->GetSnapshotCount());
-  heap_profiler->DeleteAllHeapSnapshots();
-  CHECK_EQ(0, heap_profiler->GetSnapshotCount());
-  CHECK_NE(NULL, heap_profiler->TakeHeapSnapshot(v8_str("1")));
-  CHECK_EQ(1, heap_profiler->GetSnapshotCount());
-  heap_profiler->DeleteAllHeapSnapshots();
-  CHECK_EQ(0, heap_profiler->GetSnapshotCount());
-  CHECK_NE(NULL, heap_profiler->TakeHeapSnapshot(v8_str("1")));
-  CHECK_NE(NULL, heap_profiler->TakeHeapSnapshot(v8_str("2")));
-  CHECK_EQ(2, heap_profiler->GetSnapshotCount());
-  heap_profiler->DeleteAllHeapSnapshots();
-  CHECK_EQ(0, heap_profiler->GetSnapshotCount());
+  CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount());
+  v8::HeapProfiler::DeleteAllSnapshots();
+  CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount());
+  CHECK_NE(NULL, v8::HeapProfiler::TakeSnapshot(v8_str("1")));
+  CHECK_EQ(1, v8::HeapProfiler::GetSnapshotsCount());
+  v8::HeapProfiler::DeleteAllSnapshots();
+  CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount());
+  CHECK_NE(NULL, v8::HeapProfiler::TakeSnapshot(v8_str("1")));
+  CHECK_NE(NULL, v8::HeapProfiler::TakeSnapshot(v8_str("2")));
+  CHECK_EQ(2, v8::HeapProfiler::GetSnapshotsCount());
+  v8::HeapProfiler::DeleteAllSnapshots();
+  CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount());
 }
 
 
 TEST(DeleteHeapSnapshot) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
-  CHECK_EQ(0, heap_profiler->GetSnapshotCount());
+  CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount());
   const v8::HeapSnapshot* s1 =
-      heap_profiler->TakeHeapSnapshot(v8_str("1"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("1"));
   CHECK_NE(NULL, s1);
-  CHECK_EQ(1, heap_profiler->GetSnapshotCount());
+  CHECK_EQ(1, v8::HeapProfiler::GetSnapshotsCount());
   unsigned uid1 = s1->GetUid();
-  CHECK_EQ(s1, heap_profiler->FindHeapSnapshot(uid1));
+  CHECK_EQ(s1, v8::HeapProfiler::FindSnapshot(uid1));
   const_cast<v8::HeapSnapshot*>(s1)->Delete();
-  CHECK_EQ(0, heap_profiler->GetSnapshotCount());
-  CHECK_EQ(NULL, heap_profiler->FindHeapSnapshot(uid1));
+  CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount());
+  CHECK_EQ(NULL, v8::HeapProfiler::FindSnapshot(uid1));
 
   const v8::HeapSnapshot* s2 =
-      heap_profiler->TakeHeapSnapshot(v8_str("2"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("2"));
   CHECK_NE(NULL, s2);
-  CHECK_EQ(1, heap_profiler->GetSnapshotCount());
+  CHECK_EQ(1, v8::HeapProfiler::GetSnapshotsCount());
   unsigned uid2 = s2->GetUid();
   CHECK_NE(static_cast<int>(uid1), static_cast<int>(uid2));
-  CHECK_EQ(s2, heap_profiler->FindHeapSnapshot(uid2));
+  CHECK_EQ(s2, v8::HeapProfiler::FindSnapshot(uid2));
   const v8::HeapSnapshot* s3 =
-      heap_profiler->TakeHeapSnapshot(v8_str("3"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("3"));
   CHECK_NE(NULL, s3);
-  CHECK_EQ(2, heap_profiler->GetSnapshotCount());
+  CHECK_EQ(2, v8::HeapProfiler::GetSnapshotsCount());
   unsigned uid3 = s3->GetUid();
   CHECK_NE(static_cast<int>(uid1), static_cast<int>(uid3));
-  CHECK_EQ(s3, heap_profiler->FindHeapSnapshot(uid3));
+  CHECK_EQ(s3, v8::HeapProfiler::FindSnapshot(uid3));
   const_cast<v8::HeapSnapshot*>(s2)->Delete();
-  CHECK_EQ(1, heap_profiler->GetSnapshotCount());
-  CHECK_EQ(NULL, heap_profiler->FindHeapSnapshot(uid2));
-  CHECK_EQ(s3, heap_profiler->FindHeapSnapshot(uid3));
+  CHECK_EQ(1, v8::HeapProfiler::GetSnapshotsCount());
+  CHECK_EQ(NULL, v8::HeapProfiler::FindSnapshot(uid2));
+  CHECK_EQ(s3, v8::HeapProfiler::FindSnapshot(uid3));
   const_cast<v8::HeapSnapshot*>(s3)->Delete();
-  CHECK_EQ(0, heap_profiler->GetSnapshotCount());
-  CHECK_EQ(NULL, heap_profiler->FindHeapSnapshot(uid3));
+  CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount());
+  CHECK_EQ(NULL, v8::HeapProfiler::FindSnapshot(uid3));
 }
 
 
 class NameResolver : public v8::HeapProfiler::ObjectNameResolver {
  public:
   virtual const char* GetName(v8::Handle<v8::Object> object) {
     return "Global object name";
   }
 };
 
 TEST(GlobalObjectName) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun("document = { URL:\"abcdefgh\" };");
 
   NameResolver name_resolver;
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("document"),
+      v8::HeapProfiler::TakeSnapshot(v8_str("document"),
+      v8::HeapSnapshot::kFull,
       NULL,
       &name_resolver);
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   CHECK_NE(NULL, global);
   CHECK_EQ("Object / Global object name" ,
            const_cast<i::HeapEntry*>(
                reinterpret_cast<const i::HeapEntry*>(global))->name());
 }
 
 
 TEST(NoHandleLeaks) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun("document = { URL:\"abcdefgh\" };");
 
   v8::Handle<v8::String> name(v8_str("leakz"));
   i::Isolate* isolate = i::Isolate::Current();
   int count_before = i::HandleScope::NumberOfHandles(isolate);
-  heap_profiler->TakeHeapSnapshot(name);
+  v8::HeapProfiler::TakeSnapshot(name);
   int count_after = i::HandleScope::NumberOfHandles(isolate);
   CHECK_EQ(count_before, count_after);
 }
 
 
 TEST(NodesIteration) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("iteration"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("iteration"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   CHECK_NE(NULL, global);
   // Verify that we can find this object by iteration.
   const int nodes_count = snapshot->GetNodesCount();
   int count = 0;
   for (int i = 0; i < nodes_count; ++i) {
     if (snapshot->GetNode(i) == global)
       ++count;
   }
   CHECK_EQ(1, count);
 }
 
 
 TEST(GetHeapValue) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun("a = { s_prop: \'value\', n_prop: 0.1 };");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("value"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("value"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   CHECK(global->GetHeapValue()->IsObject());
   v8::Local<v8::Object> js_global =
       env->Global()->GetPrototype().As<v8::Object>();
   CHECK(js_global == global->GetHeapValue());
   const v8::HeapGraphNode* obj = GetProperty(
       global, v8::HeapGraphEdge::kProperty, "a");
   CHECK(obj->GetHeapValue()->IsObject());
   v8::Local<v8::Object> js_obj = js_global->Get(v8_str("a")).As<v8::Object>();
   CHECK(js_obj == obj->GetHeapValue());
   const v8::HeapGraphNode* s_prop =
       GetProperty(obj, v8::HeapGraphEdge::kProperty, "s_prop");
   v8::Local<v8::String> js_s_prop =
       js_obj->Get(v8_str("s_prop")).As<v8::String>();
   CHECK(js_s_prop == s_prop->GetHeapValue());
   const v8::HeapGraphNode* n_prop =
       GetProperty(obj, v8::HeapGraphEdge::kProperty, "n_prop");
   v8::Local<v8::Number> js_n_prop =
       js_obj->Get(v8_str("n_prop")).As<v8::Number>();
   CHECK(js_n_prop == n_prop->GetHeapValue());
 }
 
 
 TEST(GetHeapValueForDeletedObject) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   // It is impossible to delete a global property, so we are about to delete a
   // property of the "a" object. Also, the "p" object can't be an empty one
   // because the empty object is static and isn't actually deleted.
   CompileRun("a = { p: { r: {} } };");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("snapshot"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("snapshot"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* obj = GetProperty(
       global, v8::HeapGraphEdge::kProperty, "a");
   const v8::HeapGraphNode* prop = GetProperty(
       obj, v8::HeapGraphEdge::kProperty, "p");
   {
     // Perform the check inside a nested local scope to avoid creating a
     // reference to the object we are deleting.
     v8::HandleScope scope(env->GetIsolate());
     CHECK(prop->GetHeapValue()->IsObject());
@@ skipping 55 matching lines @@
   v8::Local<v8::Object> obj6 = js_global->Get(v8_str("obj6")).As<v8::Object>();
   i::Handle<i::JSObject> js_obj6 = v8::Utils::OpenHandle(*obj6);
   CHECK_EQ(0, StringCmp(
       "Object", i::V8HeapExplorer::GetConstructorName(*js_obj6)));
 }
 
 
 TEST(FastCaseGetter) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun("var obj1 = {};\n"
              "obj1.__defineGetter__('propWithGetter', function Y() {\n"
              "  return 42;\n"
              "});\n"
              "obj1.__defineSetter__('propWithSetter', function Z(value) {\n"
              "  return this.value_ = value;\n"
              "});\n");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("fastCaseGetter"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("fastCaseGetter"));
 
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   CHECK_NE(NULL, global);
   const v8::HeapGraphNode* obj1 =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "obj1");
   CHECK_NE(NULL, obj1);
   const v8::HeapGraphNode* getterFunction =
       GetProperty(obj1, v8::HeapGraphEdge::kProperty, "get-propWithGetter");
   CHECK_NE(NULL, getterFunction);
   const v8::HeapGraphNode* setterFunction =
       GetProperty(obj1, v8::HeapGraphEdge::kProperty, "set-propWithSetter");
   CHECK_NE(NULL, setterFunction);
 }
 
 TEST(HiddenPropertiesFastCase) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "function C(x) { this.a = this; this.b = x; }\n"
       "c = new C(2012);\n");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("HiddenPropertiesFastCase1"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("HiddenPropertiesFastCase1"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* c =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "c");
   CHECK_NE(NULL, c);
   const v8::HeapGraphNode* hidden_props =
       GetProperty(c, v8::HeapGraphEdge::kInternal, "hidden_properties");
   CHECK_EQ(NULL, hidden_props);
 
   v8::Handle<v8::Value> cHandle = env->Global()->Get(v8::String::New("c"));
   CHECK(!cHandle.IsEmpty() && cHandle->IsObject());
   cHandle->ToObject()->SetHiddenValue(v8_str("key"), v8_str("val"));
 
-  snapshot = heap_profiler->TakeHeapSnapshot(
+  snapshot = v8::HeapProfiler::TakeSnapshot(
       v8_str("HiddenPropertiesFastCase2"));
   global = GetGlobalObject(snapshot);
   c = GetProperty(global, v8::HeapGraphEdge::kProperty, "c");
   CHECK_NE(NULL, c);
   hidden_props = GetProperty(c, v8::HeapGraphEdge::kInternal,
       "hidden_properties");
   CHECK_NE(NULL, hidden_props);
 }
 
 bool HasWeakEdge(const v8::HeapGraphNode* node) {
   for (int i = 0; i < node->GetChildrenCount(); ++i) {
     const v8::HeapGraphEdge* handle_edge = node->GetChild(i);
     if (handle_edge->GetType() == v8::HeapGraphEdge::kWeak) return true;
   }
   return false;
 }
 
 
 bool HasWeakGlobalHandle() {
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler();
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("weaks"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("weaks"));
   const v8::HeapGraphNode* gc_roots = GetNode(
       snapshot->GetRoot(), v8::HeapGraphNode::kObject, "(GC roots)");
   CHECK_NE(NULL, gc_roots);
   const v8::HeapGraphNode* global_handles = GetNode(
       gc_roots, v8::HeapGraphNode::kObject, "(Global handles)");
   CHECK_NE(NULL, global_handles);
   return HasWeakEdge(global_handles);
 }
 
 
@@ skipping 14 matching lines @@
       v8::Persistent<v8::Object>::New(env->GetIsolate(), v8::Object::New());
   handle.MakeWeak(env->GetIsolate(), NULL, PersistentHandleCallback);
 
   CHECK(HasWeakGlobalHandle());
 }
 
 
 TEST(WeakNativeContextRefs) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("weaks"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("weaks"));
   const v8::HeapGraphNode* gc_roots = GetNode(
       snapshot->GetRoot(), v8::HeapGraphNode::kObject, "(GC roots)");
   CHECK_NE(NULL, gc_roots);
   const v8::HeapGraphNode* global_handles = GetNode(
       gc_roots, v8::HeapGraphNode::kObject, "(Global handles)");
   CHECK_NE(NULL, global_handles);
   const v8::HeapGraphNode* native_context = GetNode(
       global_handles, v8::HeapGraphNode::kHidden, "system / NativeContext");
   CHECK_NE(NULL, native_context);
   CHECK(HasWeakEdge(native_context));
 }
 
 
 TEST(SfiAndJsFunctionWeakRefs) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "fun = (function (x) { return function () { return x + 1; } })(1);");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("fun"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("fun"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   CHECK_NE(NULL, global);
   const v8::HeapGraphNode* fun =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "fun");
   CHECK(HasWeakEdge(fun));
   const v8::HeapGraphNode* shared =
       GetProperty(fun, v8::HeapGraphEdge::kInternal, "shared");
   CHECK(HasWeakEdge(shared));
 }
 
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
 TEST(NoDebugObjectInSnapshot) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   v8::internal::Isolate::Current()->debug()->Load();
   CompileRun("foo = {};");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("snapshot"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("snapshot"));
   const v8::HeapGraphNode* root = snapshot->GetRoot();
   int globals_count = 0;
   for (int i = 0; i < root->GetChildrenCount(); ++i) {
     const v8::HeapGraphEdge* edge = root->GetChild(i);
     if (edge->GetType() == v8::HeapGraphEdge::kShortcut) {
       ++globals_count;
       const v8::HeapGraphNode* global = edge->GetToNode();
       const v8::HeapGraphNode* foo =
           GetProperty(global, v8::HeapGraphEdge::kProperty, "foo");
       CHECK_NE(NULL, foo);
@@ skipping 35 matching lines @@
   CHECK_EQ(global_handle_count + 1,
            v8::HeapProfiler::GetPersistentHandleCount());
   p_BBB.Dispose(env->GetIsolate());
   CHECK_EQ(global_handle_count, v8::HeapProfiler::GetPersistentHandleCount());
 }
 
 
 TEST(AllStrongGcRootsHaveNames) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun("foo = {};");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("snapshot"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("snapshot"));
   const v8::HeapGraphNode* gc_roots = GetNode(
       snapshot->GetRoot(), v8::HeapGraphNode::kObject, "(GC roots)");
   CHECK_NE(NULL, gc_roots);
   const v8::HeapGraphNode* strong_roots = GetNode(
       gc_roots, v8::HeapGraphNode::kObject, "(Strong roots)");
   CHECK_NE(NULL, strong_roots);
   for (int i = 0; i < strong_roots->GetChildrenCount(); ++i) {
     const v8::HeapGraphEdge* edge = strong_roots->GetChild(i);
     CHECK_EQ(v8::HeapGraphEdge::kInternal, edge->GetType());
     v8::String::AsciiValue name(edge->GetName());
     CHECK(isalpha(**name));
   }
 }
 
 
 TEST(NoRefsToNonEssentialEntries) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   CompileRun("global_object = {};\n");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("snapshot"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("snapshot"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* global_object =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "global_object");
   CHECK_NE(NULL, global_object);
   const v8::HeapGraphNode* properties =
       GetProperty(global_object, v8::HeapGraphEdge::kInternal, "properties");
   CHECK_EQ(NULL, properties);
   const v8::HeapGraphNode* elements =
       GetProperty(global_object, v8::HeapGraphEdge::kInternal, "elements");
   CHECK_EQ(NULL, elements);
 }
 
 
 TEST(MapHasDescriptorsAndTransitions) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   CompileRun("obj = { a: 10 };\n");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("snapshot"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("snapshot"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   const v8::HeapGraphNode* global_object =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "obj");
   CHECK_NE(NULL, global_object);
 
   const v8::HeapGraphNode* map =
       GetProperty(global_object, v8::HeapGraphEdge::kInternal, "map");
   CHECK_NE(NULL, map);
   const v8::HeapGraphNode* own_descriptors = GetProperty(
       map, v8::HeapGraphEdge::kInternal, "descriptors");
   CHECK_NE(NULL, own_descriptors);
   const v8::HeapGraphNode* own_transitions = GetProperty(
       map, v8::HeapGraphEdge::kInternal, "transitions");
   CHECK_EQ(NULL, own_transitions);
 }
 
 
 TEST(ManyLocalsInSharedContext) {
+  v8::HandleScope scope;
   LocalContext env;
-  v8::HandleScope scope(env->GetIsolate());
-  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
   int num_objects = 6000;
   CompileRun(
       "var n = 6000;"
       "var result = [];"
       "result.push('(function outer() {');"
       "for (var i = 0; i < n; i++) {"
       "    var f = 'function f_' + i + '() { ';"
       "    if (i > 0)"
       "        f += 'f_' + (i - 1) + '();';"
       "    f += ' }';"
       "    result.push(f);"
       "}"
       "result.push('return f_' + (n - 1) + ';');"
       "result.push('})()');"
       "var ok = eval(result.join('\\n'));");
   const v8::HeapSnapshot* snapshot =
-      heap_profiler->TakeHeapSnapshot(v8_str("snapshot"));
+      v8::HeapProfiler::TakeSnapshot(v8_str("snapshot"));
   const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
   CHECK_NE(NULL, global);
   const v8::HeapGraphNode* ok_object =
       GetProperty(global, v8::HeapGraphEdge::kProperty, "ok");
   CHECK_NE(NULL, ok_object);
   const v8::HeapGraphNode* context_object =
       GetProperty(ok_object, v8::HeapGraphEdge::kInternal, "context");
   CHECK_NE(NULL, context_object);
   // Check the objects are not duplicated in the context.
   CHECK_EQ(v8::internal::Context::MIN_CONTEXT_SLOTS + num_objects - 1,
            context_object->GetChildrenCount());
   // Check all the objects have got their names.
   // ... well check just every 8th because otherwise it's too slow in debug.
   for (int i = 0; i < num_objects - 1; i += 8) {
     i::EmbeddedVector<char, 100> var_name;
     i::OS::SNPrintF(var_name, "f_%d", i);
     const v8::HeapGraphNode* f_object = GetProperty(
         context_object, v8::HeapGraphEdge::kContextVariable, var_name.start());
     CHECK_NE(NULL, f_object);
   }
 }