Roll 50: Updated for push to origin/master.

tools/dom/idl/dart/dart.idl

 // This file introduces / supplements and forces Dart declarations.
 
 [DartSupplemental,
  Constructor]
 interface AudioContext {
   // TODO(ager): Auto-generate this custom method when the info about retaining
   // typed arrays is in the IDL.
   [Custom] void decodeAudioData(ArrayBuffer audioData, AudioBufferCallback successCallback, AudioBufferCallback errorCallback);
 };
 
@@ skipping 122 matching lines @@
   attribute EventListener onvolumechange;
   attribute EventListener onwaiting;
 };
 
 [DartSupplemental]
 interface RTCPeerConnection {
   [DartSuppress, RaisesException] void addIceCandidate(RTCIceCandidate candidate);
 };
 
 [DartSupplemental]
+interface WebGL2RenderingContextBase {
+    [DartName=readPixels2] void readPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLintptr offset);
+    [DartName=texImage2D2] void texImage2D(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, GLintptr offset);
+};
+
+[DartSupplemental]
 interface WebGLContextEvent {
   [DartSuppress] void initEvent(optional DOMString eventTypeArg,
                               optional boolean canBubbleArg,
                               optional boolean cancelableArg,
                               optional DOMString statusMessageArg);
 };
 
 // TODO(vsm): Define new names for these (see b/4436830).
 [DartSupplemental]
 interface IDBCursor {
@@ skipping 278 matching lines @@
 
     // FIXME: The index argument should not be optional.
     getter Node? item([Default=Undefined] optional unsigned long index);
     getter any namedItem(DOMString name);
 
     [DartSuppress] getter Element? item([Default=Undefined] optional unsigned long index);
     [DartSuppress] getter Element? namedItem(DOMString name);
 
 };
 
+[DartSupplemental]
+interface Performance {
+    [DartSuppress] void webkitClearResourceTimings();
+    [DartSuppress] void webkitSetResourceTimingBufferSize(unsigned long maxSize);
+    [DartSuppress] attribute EventHandler onwebkitresourcetimingbufferfull;
+};
+
+[DartSupplemental]
+interface CalcLength {
+    [DartName=inch] readonly attribute double? in;
+};
+
+[DartSupplemental]
+interface RTCPeerConnection {
+    [DartSuppress] Promise<void> setLocalDescription(RTCSessionDescriptionInit description);
+    [DartSuppress] Promise<void> setRemoteDescription(RTCSessionDescriptionInit description);
+};
+
+[DartSuppress]
+interface DragEvent {};
+
+[DartSuppress]
+interface InputEvent {};
+
 Element implements GlobalEventHandlers;
 
 
 // This only exists in Safari, and is deprecated there. But include it anyway
 // because otherwise iterating CSSRules in Safari can yield unknown JS objects.
 interface CSSCharsetRule : CSSRule {
     [MeasureAs=CSSCharsetRuleEncoding] attribute DOMString encoding;
 };