Spectator camera icon

interface/resources/icons/tablet-icons/spectator-i.svg

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 19.2.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 50 50" style="enable-background:new 0 0 50 50;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#FFFFFF;}
+</style>
+<g>
+	<path class="st0" d="M34.7,17.8c1.6-1.1,3.2-2.2,4.7-3.3c1.1-0.7,2.1-1,3.3-0.4c1.2,0.7,1.5,1.8,1.5,3.2c0,5.2,0,10.3,0,15.5
+		c0,1.3-0.4,2.4-1.5,3.1c-1.2,0.7-2.3,0.4-3.3-0.3c-1.6-1.1-3.2-2.2-4.8-3.3c-1.3,3.4-3.6,4.9-6.9,4.8c-5.1-0.1-10.2,0-15.4,0
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+		L23.4,24.8z"/>
+</g>
+</svg>

scripts/system/spectatorCamera.js

@@ -143,7 +143,8 @@
         if (!button) {
             if ((isHMDMode || showSpectatorInDesktop) && !isShuttingDown) {
                 button = tablet.addButton({
-                    text: buttonName
+                    text: buttonName,
+                    icon: "icons/tablet-icons/spectator-i.svg"
                 });
                 button.clicked.connect(onTabletButtonClicked);
             }