Canvas.concat takes a 16-element Float32List instead of an array.

sky/engine/tonic/BUILD.gn

 # 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.
 
 source_set("tonic") {
   sources = [
     "dart_api_scope.h",
     "dart_builtin.cc",
     "dart_builtin.h",
     "dart_class_library.cc",
     "dart_class_library.h",
     "dart_class_provider.cc",
     "dart_class_provider.h",
     "dart_converter.cc",
     "dart_converter.h",
     "dart_error.cc",
     "dart_error.h",
     "dart_exception_factory.cc",
     "dart_exception_factory.h",
+    "dart_float32list.cc",
+    "dart_float32list.h",

[abarth-chromium, 2015/06/04 17:29:27]

We can just call these float32_list.cc and float32_list.h if the class is called
Float32List.

[Matt Perry, 2015/06/04 17:34:35]

Done.

     "dart_gc_context.cc",
     "dart_gc_context.h",
     "dart_gc_controller.cc",
     "dart_gc_controller.h",
     "dart_gc_visitor.cc",
     "dart_gc_visitor.h",
     "dart_invoke.cc",
     "dart_invoke.h",
     "dart_isolate_scope.cc",
     "dart_isolate_scope.h",
@@ skipping 19 matching lines @@
     "//base",
     "//mojo/public/cpp/system",
     "//sky/engine/wtf",
   ]
 
   public_deps = [
     "//dart/runtime:libdart",
     "//dart/runtime/vm:libdart_platform",
   ]
 }