Support JSDoc on class / obj. literal getters

Fixes microsoft#6878

Author: RyanCavanaugh

src/compiler/parser.ts

@@ -3954,7 +3954,7 @@ namespace ts {
 
         function tryParseAccessorDeclaration(fullStart: number, decorators: NodeArray<Decorator>, modifiers: ModifiersArray): AccessorDeclaration {
             if (parseContextualModifier(SyntaxKind.GetKeyword)) {
-                return parseAccessorDeclaration(SyntaxKind.GetAccessor, fullStart, decorators, modifiers);
+                return addJSDocComment(parseAccessorDeclaration(SyntaxKind.GetAccessor, fullStart, decorators, modifiers));
             }
             else if (parseContextualModifier(SyntaxKind.SetKeyword)) {
                 return parseAccessorDeclaration(SyntaxKind.SetAccessor, fullStart, decorators, modifiers);

tests/cases/fourslash/getJavaScriptQuickInfo7.ts

@@ -2,19 +2,25 @@
 
 // @allowNonTsExtensions: true
 // @Filename: file.js
-//// /**
-////  * This is a very cool function that is very nice.
-////  * @returns something
-////  * @param p anotherthing
-////  */
-//// function a1(p) {
-//// 	try {
-//// 		throw new Error('x');
-//// 	} catch (x) { x--; }
-//// 	return 23;
+//// let x = {
+//// 	/** This is cool*/
+//// 	get m() {
+//// 		return 0;
+//// 	}
 //// }
-//// 
-//// x - /**/a1()
+//// x.m/*1*/;
+////
+//// class Foo {
+//// 	/** This is cool too*/
+//// 	get b() {
+//// 		return 0;
+//// 	}
+//// }
+//// var y = new Foo();
+//// y.b/*2*/;
+
+goTo.marker('1');
+verify.quickInfoIs(undefined, 'This is cool'); 
 
-goTo.marker();
-verify.quickInfoExists();
+goTo.marker('2');
+verify.quickInfoIs(undefined, 'This is cool too');