Initial VS Code 1.19 source merge (#571)

* Initial 1.19 xcopy

* Fix yarn build

* Fix numerous build breaks

* Next batch of build break fixes

* More build break fixes

* Runtime breaks

* Additional post merge fixes

* Fix windows setup file

* Fix test failures.

* Update license header blocks to refer to source eula

src/vs/editor/contrib/referenceSearch/media/peekViewWidget.css

@@ -0,0 +1,75 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+.monaco-editor .peekview-widget .head {
+	-webkit-box-sizing:	border-box;
+	-o-box-sizing: border-box;
+	-moz-box-sizing: border-box;
+	-ms-box-sizing: border-box;
+	box-sizing:	border-box;
+	display: flex;
+}
+
+.monaco-editor .peekview-widget .head .peekview-title {
+	display: inline-block;
+	font-size: 13px;
+	margin-left: 20px;
+	cursor: pointer;
+}
+
+.monaco-editor .peekview-widget .head .peekview-title .dirname:not(:empty) {
+	font-size: 0.9em;
+	margin-left: 0.5em;
+}
+
+.monaco-editor .peekview-widget .head .peekview-actions {
+	flex: 1;
+	text-align: right;
+	padding-right: 2px;
+}
+
+.monaco-editor .peekview-widget .head .peekview-actions > .monaco-action-bar {
+	display: inline-block;
+}
+
+.monaco-editor .peekview-widget .head .peekview-actions > .monaco-action-bar,
+.monaco-editor .peekview-widget .head .peekview-actions > .monaco-action-bar > .actions-container {
+	height: 100%;
+}
+
+.monaco-editor .peekview-widget .head .peekview-actions > .monaco-action-bar .action-item {
+	margin-left: 4px;
+}
+
+.monaco-editor .peekview-widget .head .peekview-actions > .monaco-action-bar .action-label {
+	width: 16px;
+	height: 100%;
+	margin: 0;
+	line-height: inherit;
+	background-repeat: no-repeat;
+	background-position: center center;
+}
+
+.monaco-editor .peekview-widget .head .peekview-actions > .monaco-action-bar .action-label.octicon {
+	margin: 0;
+}
+
+.monaco-editor .peekview-widget .head .peekview-actions .action-label.icon.close-peekview-action {
+	background: url('close.svg') center center no-repeat;
+}
+
+.monaco-editor .peekview-widget > .body {
+	border-top: 1px solid;
+	position: relative;
+}
+
+/* Dark Theme */
+/* High Contrast Theme */
+
+.monaco-editor.hc-black .peekview-widget .head .peekview-actions .action-label.icon.close-peekview-action,
+.monaco-editor.vs-dark .peekview-widget .head .peekview-actions .action-label.icon.close-peekview-action {
+	background: url('close-inverse.svg') center center no-repeat;
+}
+