Cleaning up a bunch of DOM generation tables

tools/dom/docs/docs.json

 {
   "dart.dom.html": {
     "CanvasGradient": {
       "comment": [
         "/**",
         " * An opaque canvas object representing a gradient.",
         " *",
         " * Created by calling [createLinearGradient] or [createRadialGradient] on a",
         " * [CanvasRenderingContext2D] object.",
         " *",
@@ skipping 461 matching lines @@
           "   *",
           "   * is the (more verbose) equivalent of",
           "   *",
           "   *     HttpRequest.getString('http://dartlang.org').then(",
           "   *         (result) => print('Request complete: $result'));",
           "   */"
         ]
       }
     }
   },
+  "dart.dom.web_audio": {
+    "ScriptProcessorNode": {
+      "members": {
+        "onaudioprocess": [
+          "/**",
+          "   * Get a Stream that fires events when AudioProcessingEvents occur.",
+          "   * This particular stream is special in that it only allows one listener to a",
+          "   * given stream. Converting the returned Stream [asBroadcast] will likely ruin",
+          "   * the soft-real-time properties which which these events are fired and can",
+          "   * be processed.",
+          "   */"
+        ]
+      }
+    }
+  },
   "dart.dom.web_sql": {
     "Database": {
       "members": {
         "changeVersion": [
           "/**",
           "   * Atomically update the database version to [newVersion], asynchronously",
           "   * running [callback] on the [SqlTransaction] representing this",
           "   * [changeVersion] transaction.",
           "   *",
           "   * If [callback] runs successfully, then [successCallback] is called.",
           "   * Otherwise, [errorCallback] is called.",
           "   *",
           "   * [oldVersion] should match the database's current [version] exactly.",
           "   *",
           "   * * [Database.changeVersion](http://www.w3.org/TR/webdatabase/#dom-database-changeversion) from W3C.",
           "   */"
         ]
       }
     }
   }
 }