manifest.json

{
    "manifest_version": 2,
    "name": "Workspace_Manager",
    "version": "1.0",
    "description": "Manages and saves Workspaces.",
    "icons": {
        "48": "icons/ws-icon.svg"
    },
    "permissions": [
        "activeTab",
        "storage",
        "tabs"
    ],
    "browser_specific_settings": {
        "gecko": {
            "id": "{ec8030f7-c20a-464f-9b0e-13a3a9e97384}",
            "strict_min_version": "42.0"
        }
    },
    "browser_action": {
        "default_icon": "icons/ws-icon.svg",
        "default_title": "Add Workspace",
        "default_popup": "popup/workspaces.html"
    },
    "chrome_url_overrides": {
        "newtab": "new-tab.html"
    },
    "chrome_settings_overrides": {
        "homepage": "new-tab.html"
    }
}