Update paremeter hint chevrons (ref #86708)

src/vs/editor/contrib/parameterHints/arrow-down-dark.svg

-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="#E8E8E8" d="M5.1 5l-.9.9 3.6 3.6 3.9-3.6-1-.9-3 2.7L5.1 5z"/></svg>
\ No newline at end of file

src/vs/editor/contrib/parameterHints/arrow-down.svg

-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="#424242" d="M5.1 5l-.9.9 3.6 3.6 3.9-3.6-1-.9-3 2.7L5.1 5z"/></svg>
\ No newline at end of file

src/vs/editor/contrib/parameterHints/arrow-up-dark.svg

-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="#E8E8E8" d="M10.8 9.5l.9-.9L8.1 5 4.2 8.6l.9.9 3-2.7 2.7 2.7z"/></svg>
\ No newline at end of file

src/vs/editor/contrib/parameterHints/arrow-up.svg

-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="#424242" d="M10.8 9.5l.9-.9L8.1 5 4.2 8.6l.9.9 3-2.7 2.7 2.7z"/></svg>
\ No newline at end of file

src/vs/editor/contrib/parameterHints/parameterHints.css

@@ -89,11 +89,7 @@
 
 .monaco-editor .parameter-hints-widget .button.previous {
 	bottom: 24px;
-	background-image: url('arrow-up.svg');
-}
-
-.monaco-editor .parameter-hints-widget .button.next {
-	background-image: url('arrow-down.svg');
+	/* background-image: url('arrow-up.svg'); */
 }
 
 .monaco-editor .parameter-hints-widget .overloads {
@@ -113,15 +109,3 @@
 	font-weight: bold;
 	margin-right: 0.5em;
 }
-
-/*** VS Dark & High Contrast*/
-
-.monaco-editor.hc-black .parameter-hints-widget .button.previous,
-.monaco-editor.vs-dark .parameter-hints-widget .button.previous {
-	background-image: url('arrow-up-dark.svg');
-}
-
-.monaco-editor.hc-black .parameter-hints-widget .button.next,
-.monaco-editor.vs-dark .parameter-hints-widget .button.next {
-	background-image: url('arrow-down-dark.svg');
-}

src/vs/editor/contrib/parameterHints/parameterHintsWidget.ts

@@ -78,9 +78,9 @@ export class ParameterHintsWidget extends Disposable implements IContentWidget {
 		wrapper.tabIndex = -1;
 
 		const controls = dom.append(wrapper, $('.controls'));
-		const previous = dom.append(controls, $('.button.previous'));
+		const previous = dom.append(controls, $('.button.codicon.codicon-chevron-up'));
 		const overloads = dom.append(controls, $('.overloads'));
-		const next = dom.append(controls, $('.button.next'));
+		const next = dom.append(controls, $('.button.codicon.codicon-chevron-down'));
 
 		const onPreviousClick = stop(domEvent(previous, 'click'));
 		this._register(onPreviousClick(this.previous, this));