Roll Chrome into Mojo.

gin/isolate_holder.cc

 // Copyright 2013 The Chromium 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 "gin/public/isolate_holder.h"
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "base/files/memory_mapped_file.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
+#include "base/metrics/field_trial.h"
 #include "base/rand_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/sys_info.h"
 #include "crypto/sha2.h"
 #include "gin/array_buffer.h"
 #include "gin/debug_impl.h"
 #include "gin/function_template.h"
 #include "gin/per_isolate_data.h"
 #include "gin/public/v8_platform.h"
 #include "gin/run_microtasks_observer.h"
@@ skipping 236 matching lines @@
 void IsolateHolder::Initialize(ScriptMode mode,
                                v8::ArrayBuffer::Allocator* allocator) {
   CHECK(allocator);
   static bool v8_is_initialized = false;
   if (v8_is_initialized)
     return;
   v8::V8::InitializePlatform(V8Platform::Get());
   v8::V8::SetArrayBufferAllocator(allocator);
   g_array_buffer_allocator = allocator;
   if (mode == gin::IsolateHolder::kStrictMode) {
-    static const char v8_flags[] = "--use_strict";
-    v8::V8::SetFlagsFromString(v8_flags, sizeof(v8_flags) - 1);
+    static const char use_strict[] = "--use_strict";
+    v8::V8::SetFlagsFromString(use_strict, sizeof(use_strict) - 1);
+  }
+  if (base::FieldTrialList::FindFullName("V8VerifyHeap") == "Enabled") {
+    static const char verify_heap[] = "--verify_heap";
+    v8::V8::SetFlagsFromString(verify_heap, sizeof(verify_heap) - 1);
   }
   v8::V8::SetEntropySource(&GenerateEntropy);
 #if defined(V8_USE_EXTERNAL_STARTUP_DATA)
   v8::StartupData natives;
   natives.data = reinterpret_cast<const char*>(g_mapped_natives->data());
   natives.raw_size = static_cast<int>(g_mapped_natives->length());
   v8::V8::SetNativesDataBlob(&natives);
 
   v8::StartupData snapshot;
   snapshot.data = reinterpret_cast<const char*>(g_mapped_snapshot->data());
@@ skipping 10 matching lines @@
   base::MessageLoop::current()->AddTaskObserver(task_observer_.get());
 }
 
 void IsolateHolder::RemoveRunMicrotasksObserver() {
   DCHECK(task_observer_.get());
   base::MessageLoop::current()->RemoveTaskObserver(task_observer_.get());
   task_observer_.reset();
 }
 
 }  // namespace gin