Enable Dart's checked mode in the Sky controller by default for debug builds

sky/engine/core/script/dart_controller.cc

 // Copyright 2015 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 "sky/engine/config.h"
 #include "sky/engine/core/script/dart_controller.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 23 matching lines @@
 #include "sky/engine/tonic/dart_error.h"
 #include "sky/engine/tonic/dart_gc_controller.h"
 #include "sky/engine/tonic/dart_invoke.h"
 #include "sky/engine/tonic/dart_isolate_scope.h"
 #include "sky/engine/tonic/dart_state.h"
 #include "sky/engine/tonic/dart_wrappable.h"
 #include "sky/engine/wtf/text/TextPosition.h"
 
 namespace blink {
 
-#if ENABLE(ASSERT)
+#if ENABLE(DART_STRICT)
 static const char* kCheckedModeArgs[] = {
   "--enable_asserts",
   "--enable_type_checks",
   "--error_on_bad_type",
   "--error_on_bad_override",
 };
 #endif
 
 extern const uint8_t* kDartVmIsolateSnapshotBuffer;
 extern const uint8_t* kDartIsolateSnapshotBuffer;
@@ skipping 307 matching lines @@
   // Don't use a DartIsolateScope here since we never exit the isolate.
   Dart_EnterIsolate(dom_dart_state_->isolate());
   Dart_ShutdownIsolate();
   dom_dart_state_.clear();
 }
 
 void DartController::InitVM() {
   int argc = 0;
   const char** argv = nullptr;
 
-#if ENABLE(ASSERT)
+#if ENABLE(DART_STRICT)
   argc = arraysize(kCheckedModeArgs);
   argv = kCheckedModeArgs;
 #endif
 
   dart::bin::BootstrapDartIo();
 
   CHECK(Dart_SetVMFlags(argc, argv));
   // This should be called before calling Dart_Initialize.
   DartDebugger::InitDebugger();
   CHECK(Dart_Initialize(kDartVmIsolateSnapshotBuffer,
                         IsolateCreateCallback,
                         nullptr,  // Isolate interrupt callback.
                         UnhandledExceptionCallback, IsolateShutdownCallback,
                         // File IO callbacks.
                         nullptr, nullptr, nullptr, nullptr, nullptr));
   // Wait for load port- ensures handle watcher and service isolates are
   // running.
   Dart_ServiceWaitForLoadPort();
 }
 
 } // namespace blink