Registration-based approach to cross frame support.

pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/runtime.dart

Index: pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/runtime.dart
diff --git a/pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/runtime.dart b/pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/runtime.dart
index 40aa8f264ecfe4b49ccc4c0c281bcd19cf3c4767..8dff67c6617d9bbf947197c69c2aa1fbdf17b33d 100644
--- a/pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/runtime.dart
+++ b/pkg/dev_compiler/tool/input_sdk/private/ddc_runtime/runtime.dart
@@ -36,69 +36,79 @@ part 'utils.dart';
 // TODO(vsm): Move polyfill code to dart:html.
 // Note, native extensions are registered onto types in dart.global.
 // This polyfill needs to run before the corresponding dart:html code is run.
-@JSExportName('global')
-final global_ = JS(
+final polyfill = JS(
     '',
     '''
-  function () {
-    if (typeof NodeList !== "undefined") {
-      // TODO(vsm): Do we still need these?
-      NodeList.prototype.get = function(i) { return this[i]; };
-      NamedNodeMap.prototype.get = function(i) { return this[i]; };
-      DOMTokenList.prototype.get = function(i) { return this[i]; };
-      HTMLCollection.prototype.get = function(i) { return this[i]; };
+function (window) {
+  if (typeof window.NodeList !== "undefined") {
+    // TODO(vsm): Do we still need these?
+    window.NodeList.prototype.get = function(i) { return this[i]; };
+    window.NamedNodeMap.prototype.get = function(i) { return this[i]; };
+    window.DOMTokenList.prototype.get = function(i) { return this[i]; };
+    window.HTMLCollection.prototype.get = function(i) { return this[i]; };
 
-      // Expose constructors for DOM types dart:html needs to assume are
-      // available on window.
-      if (typeof PannerNode == "undefined") {
-        let audioContext;
-        if (typeof AudioContext == "undefined" &&
-            (typeof webkitAudioContext != "undefined")) {
-          audioContext = new webkitAudioContext();
-        } else {
-          audioContext = new AudioContext();
-          window.StereoPannerNode =
-              audioContext.createStereoPanner().constructor;
-        }
-        window.PannerNode = audioContext.createPanner().constructor;
-      }
-      if (typeof AudioSourceNode == "undefined") {
-        window.AudioSourceNode = MediaElementAudioSourceNode.__proto__;
-      }
-      if (typeof FontFaceSet == "undefined") {
-        // CSS Font Loading is not supported on Edge.
-        if (typeof document.fonts != "undefined") {
-          window.FontFaceSet = document.fonts.__proto__.constructor;
-        }
-      }
-      if (typeof MemoryInfo == "undefined") {
-        if (typeof window.performance.memory != "undefined") {
-          window.MemoryInfo = window.performance.memory.constructor;
-        }
+    // Expose constructors for DOM types dart:html needs to assume are
+    // available on window.
+    if (typeof window.PannerNode == "undefined") {
+      let audioContext;
+      if (typeof window.AudioContext == "undefined" &&
+          (typeof window.webkitAudioContext != "undefined")) {
+        audioContext = new window.webkitAudioContext();
+      } else {
+        audioContext = new window.AudioContext();
+        window.StereoPannerNode =
+            audioContext.createStereoPanner().constructor;
       }
-      if (typeof Geolocation == "undefined") {
-        navigator.geolocation.constructor;
-      }
-      if (typeof Animation == "undefined") {
-        let d = document.createElement('div');
-        if (typeof d.animate != "undefined") {
-          window.Animation = d.animate(d).constructor;
-        }
+      window.PannerNode = audioContext.createPanner().constructor;
+    }
+    if (typeof window.AudioSourceNode == "undefined") {
+      window.AudioSourceNode = MediaElementAudioSourceNode.__proto__;
+    }
+    if (typeof window.FontFaceSet == "undefined") {
+      // CSS Font Loading is not supported on Edge.
+      if (typeof window.document.fonts != "undefined") {
+        window.FontFaceSet = window.document.fonts.__proto__.constructor;
       }
-      if (typeof SourceBufferList == "undefined") {
-        window.SourceBufferList = new MediaSource().sourceBuffers.constructor;
+    }
+    if (typeof window.MemoryInfo == "undefined") {
+      if (typeof window.performance.memory != "undefined") {
+        window.MemoryInfo = window.performance.memory.constructor;
       }
-      if (typeof SpeechRecognition == "undefined") {
-        window.SpeechRecognition = window.webkitSpeechRecognition;
-        window.SpeechRecognitionError = window.webkitSpeechRecognitionError;
-        window.SpeechRecognitionEvent = window.webkitSpeechRecognitionEvent;
+    }
+    if (typeof window.Geolocation == "undefined") {
+      window.Geolocation == window.navigator.geolocation.constructor;
+    }
+    if (typeof window.Animation == "undefined") {
+      let d = window.document.createElement('div');
+      if (typeof d.animate != "undefined") {
+        window.Animation = d.animate(d).constructor;
       }
     }
+    if (typeof window.SourceBufferList == "undefined") {
+      window.SourceBufferList =
+        new window.MediaSource().sourceBuffers.constructor;
+    }
+    if (typeof window.SpeechRecognition == "undefined") {
+      window.SpeechRecognition = window.webkitSpeechRecognition;
+      window.SpeechRecognitionError = window.webkitSpeechRecognitionError;
+      window.SpeechRecognitionEvent = window.webkitSpeechRecognitionEvent;
+    }
+  }
+}
+''');
 
+@JSExportName('global')
+final global_ = JS(
+    '',
+    '''
+  function () {
+    // Find global object.
     var globalState = (typeof window != "undefined") ? window
       : (typeof global != "undefined") ? global
       : (typeof self != "undefined") ? self : {};
 
+    $polyfill(globalState);
+
     // These settings must be configured before the application starts so that
     // user code runs with the correct configuration.
     let settings = 'ddcSettings' in globalState ? globalState.ddcSettings : {};