Add libdart_precompiled_runtime target to runtime/BUILD.gn

runtime/BUILD.gn

Index: runtime/BUILD.gn
diff --git a/runtime/BUILD.gn b/runtime/BUILD.gn
index 6932f9326b82a24d548d327609896a910a580d22..e804b9c4d836c66c10486cf106b3b56ed60633b5 100644
--- a/runtime/BUILD.gn
+++ b/runtime/BUILD.gn
@@ -50,10 +50,6 @@ config("dart_config") {
     defines += ["NDEBUG"]
   }
 
-  if (is_ios || is_mac) {

[rmacnak, 2016/02/25 00:42:46]

We can't remove this until there is another way to build the snapshot generator.

-    defines += ["DART_PRECOMPILER"]
-  }
-
   cflags = [
     "-Werror",
     "-Wall",
@@ -119,6 +115,38 @@ static_library("libdart") {
 }
 
 
+static_library("libdart_precompiled_runtime") {
+  configs += [":dart_config"]
+  deps = [
+    "vm:libdart_lib_precompiled_runtime",
+    "vm:libdart_vm_precompiled_runtime",
+    "third_party/double-conversion/src:libdouble_conversion",
+    ":generate_version_cc_file",
+  ]
+  include_dirs = [
+    ".",
+  ]
+  public_configs = [":dart_public_config"]
+  sources = [
+    "include/dart_api.h",
+    "include/dart_mirrors_api.h",
+    "include/dart_native_api.h",
+    "include/dart_tools_api.h",
+    "vm/dart_api_impl.cc",
+    "vm/debugger_api_impl.cc",
+    "vm/mirrors_api_impl.cc",
+    "vm/native_api_impl.cc",
+    "vm/version.h",
+    "$target_gen_dir/version.cc",
+  ]
+  defines = [
+    # Using DART_SHARED_LIB to export the Dart API entries.
+    "DART_SHARED_LIB",
+    "DART_PRECOMPILED_RUNTIME",
+  ]
+}
+
+
 action("generate_version_cc_file") {
   deps = [
     ":libdart_dependency_helper",