Merge the Sky Engine changes from the SkyDart branch

sky/engine/core/html/TextMetrics.idl

Index: sky/engine/core/html/TextMetrics.idl
diff --git a/sky/engine/core/html/TextMetrics.idl b/sky/engine/core/html/TextMetrics.idl
index 747b5c722dd22aee2228b6fa52b88961e6bab081..7ca6e11b882dea7b04e1680cf25a277f54dde844 100644
--- a/sky/engine/core/html/TextMetrics.idl
+++ b/sky/engine/core/html/TextMetrics.idl
@@ -26,17 +26,17 @@
 ] interface TextMetrics {
     // x-direction
     readonly attribute float width;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float actualBoundingBoxLeft;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float actualBoundingBoxRight;
+    readonly attribute float actualBoundingBoxLeft;
+    readonly attribute float actualBoundingBoxRight;
 
     // y-direction
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float fontBoundingBoxAscent;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float fontBoundingBoxDescent;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float actualBoundingBoxAscent;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float actualBoundingBoxDescent;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float emHeightAscent;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float emHeightDescent;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float hangingBaseline;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float alphabeticBaseline;
-    [RuntimeEnabled=ExperimentalCanvasFeatures] readonly attribute float ideographicBaseline;
+    readonly attribute float fontBoundingBoxAscent;
+    readonly attribute float fontBoundingBoxDescent;
+    readonly attribute float actualBoundingBoxAscent;
+    readonly attribute float actualBoundingBoxDescent;
+    readonly attribute float emHeightAscent;
+    readonly attribute float emHeightDescent;
+    readonly attribute float hangingBaseline;
+    readonly attribute float alphabeticBaseline;
+    readonly attribute float ideographicBaseline;
 };