From 22d7bc4a3a44ca44916405f516719bde2e3057ac Mon Sep 17 00:00:00 2001
From: Collin Jackson <jackson@google.com>
Date: Fri, 4 Mar 2016 16:22:27 -0800
Subject: [PATCH] Enable conditional directives

---
 sky/engine/core/script/dart_init.cc | 5 +++++
 sky/tools/sky_snapshot/vm.cc        | 1 +
 2 files changed, 6 insertions(+)

diff --git a/sky/engine/core/script/dart_init.cc b/sky/engine/core/script/dart_init.cc
index a4818ec98e275..edd824024b4f0 100644
--- a/sky/engine/core/script/dart_init.cc
+++ b/sky/engine/core/script/dart_init.cc
@@ -86,6 +86,10 @@ static const char* kDartBackgroundCompilationArgs[] = {
   "--background_compilation",
 };
 
+static const char *kDartConditionalDirectivesArgs[] = {
+    "--conditional_directives",
+};
+
 static const char* kDartCheckedModeArgs[] = {
     "--enable_asserts",
     "--enable_type_checks",
@@ -324,6 +328,7 @@ void InitDartVM() {
 
   Vector<const char*> args;
   args.append(kDartProfilingArgs, arraysize(kDartProfilingArgs));
+  args.append(kDartConditionalDirectivesArgs, arraysize(kDartConditionalDirectivesArgs));
 
   if (!IsRunningPrecompiledCode()) {
     // The version of the VM setup to run precompiled code does not recognize
diff --git a/sky/tools/sky_snapshot/vm.cc b/sky/tools/sky_snapshot/vm.cc
index e13246adf9dca..eb5f8b941f408 100644
--- a/sky/tools/sky_snapshot/vm.cc
+++ b/sky/tools/sky_snapshot/vm.cc
@@ -16,6 +16,7 @@ extern void* kDartIsolateSnapshotBuffer;
 static const char* kDartArgs[] = {
     "--enable_mirrors=false",
     "--load_deferred_eagerly=true",
+    "--conditional_directives",
 };
 
 void InitDartVM() {