Extension docs: Make comments in IDL files generate paragraphs rather than

tools/json_schema_compiler/dart_test/comments.idl

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This comment is for the comments namespace.
 namespace comments {
   // This comments the "Functions" block, and should be ignored.
   interface Functions {
     // This comment is separated by at least one blank line from the start of
     // the function, and should be ignored.
   
     //
     // There's a blank line at the start of this comment.
-    // 
+    //
     // Documentation for basicFunction.
     // BasicFunction() is a great function.
     // There is a newline after this.
     //
     // It works like so:
     //        +-----+
     //        |     |     +--+
     //        |     |     |  |
     //        +-----+ --> +--+
     //
     // Some other stuff here.
     //    This paragraph starts with whitespace.
     //    Overall, its a great function.
     // There's also a blank line at the end of this comment.
     //
     static void basicFunction();
   };
 };