Add icon.

icons/gmcr.svg

@@ -0,0 +1,104 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   width="1920px"
+   height="1920px"
+   viewBox="0 0 1920 1920"
+   version="1.1"
+   id="SVGRoot">
+  <defs
+     id="defs2621">
+    <rect
+       x="3.9868472"
+       y="260.95402"
+       width="537.01245"
+       height="1437.3961"
+       id="rect2689" />
+    <clipPath
+       id="clip-path">
+      <rect
+         id="rect1295"
+         height="745"
+         width="3842.47"
+         class="cls-3"
+         x="0"
+         y="0" />
+    </clipPath>
+    <clipPath
+       id="clipPath2646">
+      <rect
+         id="rect2644"
+         height="745"
+         width="3842.47"
+         class="cls-3"
+         x="0"
+         y="0" />
+    </clipPath>
+    <rect
+       id="rect2689-8"
+       height="1437.3961"
+       width="537.01245"
+       y="260.95401"
+       x="3.9868472" />
+    <rect
+       id="rect2702"
+       height="1437.3961"
+       width="537.01245"
+       y="260.95401"
+       x="3.9868472" />
+  </defs>
+  <metadata
+     id="metadata2624">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     id="layer1">
+    <g
+       id="g1449"
+       clip-path="url(#clip-path)"
+       class="cls-4"
+       transform="matrix(2.7331382,0,0,2.7331382,-5168.176,432.10782)"
+       style="fill:#119083;fill-opacity:1">
+      <g
+         transform="translate(1566.0193,-7.6291085)"
+         id="g1441"
+         clip-path="url(#clip-path)"
+         class="cls-4"
+         style="fill:#119083;fill-opacity:1">
+        <path
+           id="path1407"
+           d="m 772.7414,171.67418 v -48.5 a 38.73,38.73 0 0 0 -38.63,-38.799995 H 540.93139 a 38.73,38.73 0 0 0 -38.63,38.799995 v 155.2 a 38.73,38.73 0 0 0 38.63,38.8 H 734.1114 a 38.73,38.73 0 0 0 38.63,-38.8 v -48.54 l 77.27,77.6 V 94.064185 Z"
+           class="cls-18"
+           style="fill:#119083;fill-opacity:1" />
+      </g>
+    </g>
+    <text
+       xml:space="preserve"
+       id="text2687"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:866.667px;line-height:1;font-family:Winks;-inkscape-font-specification:Winks;letter-spacing:0px;word-spacing:0px;white-space:pre;shape-inside:url(#rect2689);fill:#119083;fill-opacity:1;stroke:none;"
+       transform="translate(5.1730655,57.95706)"><tspan
+         x="3.9863281"
+         y="1429.0598"><tspan
+           style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:1333.33px;font-family:Impact;-inkscape-font-specification:Impact;fill:#119083;fill-opacity:1">/</tspan></tspan></text>
+    <text
+       transform="translate(1387.1622,57.95706)"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:866.667px;line-height:1;font-family:Winks;-inkscape-font-specification:Winks;letter-spacing:0px;word-spacing:0px;white-space:pre;shape-inside:url(#rect2689-8);fill:#119083;fill-opacity:1;stroke:none;"
+       id="text2687-0"
+       xml:space="preserve"><tspan
+         x="3.9863281"
+         y="1429.0598"><tspan
+           style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:1333.33px;font-family:Impact;-inkscape-font-specification:Impact;fill:#119083;fill-opacity:1">/</tspan></tspan></text>
+  </g>
+</svg>

manifest.json

@@ -5,6 +5,11 @@
 
 	"description": "Send a notification when a caption in Google Meet matches a certain regex.",
 
+	"icons": {
+		"48": "icons/gmcr.svg",
+		"96": "icons/gmcr.svg"
+	},
+
 	"content_scripts": [
 		{
 			"matches": ["https://meet.google.com/*"],