Expand overloaded methods and optional parameters in the html library.

tools/dom/dom.json

 {
   "AbstractWorker": {
     "comment": "http://www.w3.org/TR/workers/#the-abstractworker-abstract-interface",
     "members": {
       "addEventListener": {},
       "dispatchEvent": {},
       "onerror": {},
       "removeEventListener": {}
     },
     "support_level": "stable"
@@ skipping 96 matching lines @@
     "support_level": "experimental"
   },
   "AudioContext": {
     "comment": "https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#AudioContext-section",
     "members": {
       "AudioContext": {},
       "activeSourceCount": {},
       "createAnalyser": {},
       "createBiquadFilter": {},
       "createBuffer": {},
+      "createBufferFromBuffer": {},
       "createBufferSource": {},
       "createChannelMerger": {},
       "createChannelSplitter": {},
       "createConvolver": {},
       "createDelay": {},
       "createDelayNode": {},
       "createDynamicsCompressor": {},
+      "createEmptyBuffer": {},
       "createGain": {},
       "createGainNode": {},
       "createJavaScriptNode": {},
       "createMediaElementSource": {},
       "createMediaStreamDestination": {},
       "createMediaStreamSource": {},
       "createOscillator": {},
       "createPanner": {},
       "createScriptProcessor": {},
       "createWaveShaper": {},
@@ skipping 147 matching lines @@
   "CDATASection": {
     "comment": "http://dom.spec.whatwg.org/#cdatasection",
     "dart_action": "suppress",
     "members": {},
     "support_level": "deprecated"
   },
   "CSS": {
     "comment": "http://www.w3.org/TR/css3-conditional/#the-css-interface",
     "dart_action": "experimental",
     "members": {
-      "supports": {}
+      "supports": {},
+      "supportsCondition": {},
+      "supportsProperty": {}
     }
   },
   "CSSCharsetRule": {
     "comment": "http://dev.w3.org/csswg/cssom/#the-csscharsetrule-interface",
     "members": {
       "encoding": {}
     },
     "support_level": "experimental"
   },
   "CSSFilterRule": {
@@ skipping 398 matching lines @@
       "clearRect": {},
       "clearShadow": {
         "support_level": "nonstandard"
       },
       "clip": {},
       "closePath": {},
       "createImageData": {},
       "createImageDataFromImageData": {},
       "createLinearGradient": {},
       "createPattern": {},
+      "createPatternFromCanvas": {},
+      "createPatternFromImage": {},
       "createRadialGradient": {},
       "currentPath": {
         "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#path-objects",
         "support_level": "experimental"
       },
       "drawImage": {},
       "drawImageFromRect": {},
       "fill": {},
       "fillRect": {},
       "fillStyle": {},
@@ skipping 862 matching lines @@
       "webkitGetAsEntry": {
         "support_level": "experimental"
       }
     },
     "support_level": "experimental"
   },
   "DataTransferItemList": {
     "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#the-datatransferitemlist-interface",
     "members": {
       "add": {},
+      "addData": {},
+      "addFile": {},
       "clear": {},
       "item": {},
       "length": {}
     },
     "support_level": "experimental"
   },
   "DataView": {
     "comment": "http://www.khronos.org/registry/typedarray/specs/latest/",
     "members": {
       "getFloat32": {},
@@ skipping 1384 matching lines @@
       "onloadingdone": {},
       "onloadstart": {},
       "removeEventListener": {}
     },
     "support_level": "experimental"
   },
   "FormData": {
     "comment": "http://www.w3.org/TR/XMLHttpRequest2/#interface-formdata",
     "members": {
       "FormData": {},
-      "append": {}
+      "append": {},
+      "appendBlob": {},
+      "appendString": {}
     },
     "support_level": "stable"
   },
   "GainNode": {
     "comment": "https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#GainNode",
     "members": {
       "gain": {}
     },
     "support_level": "experimental"
   },
@@ skipping 2017 matching lines @@
       "createObjectStore": {},
       "deleteObjectStore": {},
       "dispatchEvent": {},
       "name": {},
       "objectStoreNames": {},
       "onabort": {},
       "onerror": {},
       "onversionchange": {},
       "removeEventListener": {},
       "transaction": {},
+      "transactionList": {},
+      "transactionString": {},
+      "transactionStringList": {},
       "version": {}
     },
     "support_level": "stable"
   },
   "IDBFactory": {
     "comment": "http://www.w3.org/TR/IndexedDB/#idl-def-IDBFactory",
     "dart_action": "unstable",
     "members": {
       "cmp": {},
       "deleteDatabase": {},
@@ skipping 1575 matching lines @@
       "close": {},
       "dispatchEvent": {},
       "label": {},
       "onclose": {},
       "onerror": {},
       "onmessage": {},
       "onopen": {},
       "readyState": {},
       "reliable": {},
       "removeEventListener": {},
-      "send": {}
+      "send": {},
+      "sendBlob": {},
+      "sendByteBuffer": {},
+      "sendString": {},
+      "sendTypedData": {}
     },
     "support_level": "experimental"
   },
   "RTCDataChannelEvent": {
     "comment": "http://dev.w3.org/2011/webrtc/editor/webrtc.html#rtcdatachannelevent",
     "members": {
       "channel": {}
     },
     "support_level": "experimental"
   },
@@ skipping 4040 matching lines @@
         "dart_action": "unstable",
         "support_level": "deprecated"
       }
     },
     "support_level": "stable"
   },
   "URL": {
     "comment": "http://www.w3.org/TR/FileAPI/#URL-object",
     "members": {
       "createObjectURL": {},
+      "createObjectUrlFromBlob": {},
+      "createObjectUrlFromSource": {},
+      "createObjectUrlFromStream": {},
       "revokeObjectURL": {}
     },
     "support_level": "stable"
   },
   "Uint16Array": {
     "comment": "http://www.khronos.org/registry/typedarray/specs/latest/",
     "members": {
       "BYTES_PER_ELEMENT": {},
       "length": {},
       "setElements": {},
@@ skipping 494 matching lines @@
       "bindBuffer": {},
       "bindFramebuffer": {},
       "bindRenderbuffer": {},
       "bindTexture": {},
       "blendColor": {},
       "blendEquation": {},
       "blendEquationSeparate": {},
       "blendFunc": {},
       "blendFuncSeparate": {},
       "bufferData": {},
+      "bufferEmptyData": {},
       "bufferSubData": {},
+      "bufferSubTypedData": {},
+      "bufferTypedData": {},
       "checkFramebufferStatus": {},
       "clear": {},
       "clearColor": {},
       "clearDepth": {},
       "clearStencil": {},
       "colorMask": {},
       "compileShader": {},
       "compressedTexImage2D": {},
       "compressedTexSubImage2D": {},
       "copyTexImage2D": {},
@@ skipping 74 matching lines @@
       "sampleCoverage": {},
       "scissor": {},
       "shaderSource": {},
       "stencilFunc": {},
       "stencilFuncSeparate": {},
       "stencilMask": {},
       "stencilMaskSeparate": {},
       "stencilOp": {},
       "stencilOpSeparate": {},
       "texImage2D": {},
+      "texImage2DCanvas": {},
+      "texImage2DData": {},
+      "texImage2DImage": {},
+      "texImage2DVideo": {},
       "texParameterf": {},
       "texParameteri": {},
       "texSubImage2D": {},
+      "texSubImage2DCanvas": {},
+      "texSubImage2DData": {},
+      "texSubImage2DImage": {},
+      "texSubImage2DVideo": {},
       "uniform1f": {},
       "uniform1fv": {},
       "uniform1i": {},
       "uniform1iv": {},
       "uniform2f": {},
       "uniform2fv": {},
       "uniform2i": {},
       "uniform2iv": {},
       "uniform3f": {},
       "uniform3fv": {},
@@ skipping 112 matching lines @@
       "dispatchEvent": {},
       "extensions": {},
       "onclose": {},
       "onerror": {},
       "onmessage": {},
       "onopen": {},
       "protocol": {},
       "readyState": {},
       "removeEventListener": {},
       "send": {},
+      "sendBlob": {},
+      "sendByteBuffer": {},
+      "sendString": {},
+      "sendTypeData": {},
       "url": {}
     },
     "support_level": "stable"
   },
   "WheelEvent": {
     "comment": "http://www.w3.org/TR/DOM-Level-3-Events/#events-wheelevents",
     "members": {
       "DOM_DELTA_LINE": {},
       "DOM_DELTA_PAGE": {},
       "DOM_DELTA_PIXEL": {},
@@ skipping 342 matching lines @@
       "importStylesheet": {},
       "removeParameter": {},
       "reset": {},
       "setParameter": {},
       "transformToDocument": {},
       "transformToFragment": {}
     },
     "support_level": "nonstandard"
   }
 }