Add color enhancer as a chromium accessibility extensions.

ui/accessibility/extensions/colorenhancer/manifest.json

Index: ui/accessibility/extensions/colorenhancer/manifest.json
diff --git a/ui/accessibility/extensions/colorenhancer/manifest.json b/ui/accessibility/extensions/colorenhancer/manifest.json
new file mode 100644
index 0000000000000000000000000000000000000000..4c061ba86136ac551cd958dca42b2e9f0508bf37
--- /dev/null
+++ b/ui/accessibility/extensions/colorenhancer/manifest.json
@@ -0,0 +1,45 @@
+{
+  "name": "__MSG_COLOR_ENHANCER_APPNAME__",
+  "version": "1.1.2",
+  "description": "__MSG_COLOR_ENHANCER_APPDESC__",
+  "manifest_version": 2,
+  "icons": {
+    "16": "res/cvd-16.png",
+    "48": "res/cvd-48.png",
+    "128": "res/cvd-128.png"
+  },
+  "permissions": [
+    "<all_urls>",
+    "tabs"
+  ],
+  "background": {
+    "scripts": [
+      "src/common.js",
+      "src/storage.js",
+      "src/background.js"
+    ]
+  },
+  "browser_action": {
+    "default_icon": {
+      "19": "res/cvd-19.png",
+      "38": "res/cvd-38.png"
+    },
+    "default_title": "__MSG_COLOR_ENHANCER_APPNAME__",
+    "default_popup": "src/popup.html"
+  },
+  "content_scripts": [
+    {
+      "run_at": "document_start",
+      "matches": [
+        "<all_urls>"
+      ],
+      "css": [
+        "res/cvd.css"
+      ],
+      "js": [
+        "src/common.js",
+        "src/cvd.js"
+      ]
+    }
+  ]
+}