{
  "webextensions": {
    "manifest": {
      "chrome_url_overrides": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/manifest.json/chrome_url_overrides",
          "support": {
            "chrome": {
              "version_added": true
            },
            "edge": {
              "version_added": "79"
            },
            "firefox": {
              "version_added": "54"
            },
            "firefox_android": {
              "version_added": false
            },
            "opera": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            }
          }
        },
        "bookmarks": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": true
              },
              "edge": {
                "version_added": "79"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "opera": {
                "version_added": false
              },
              "safari": {
                "version_added": false
              }
            }
          }
        },
        "history": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": true
              },
              "edge": {
                "version_added": "79"
              },
              "firefox": {
                "version_added": false
              },
              "firefox_android": {
                "version_added": false
              },
              "opera": {
                "version_added": false
              },
              "safari": {
                "version_added": false
              }
            }
          }
        },
        "newtab": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": true,
                "notes": "If two or more extensions both define a custom new tab page, then in Firefox the first extension to run wins. In Chrome the last extension wins."
              },
              "edge": {
                "version_added": "79",
                "notes": "If two or more extensions both define a custom new tab page, then in Firefox the first extension to run wins. In Edge the last extension wins."
              },
              "firefox": {
                "version_added": "54",
                "notes": "If two or more extensions both define a custom new tab page, then in Firefox the first extension to run wins. In Chrome the last extension wins."
              },
              "firefox_android": {
                "version_added": false
              },
              "opera": {
                "version_added": false
              },
              "safari": {
                "version_added": false
              }
            }
          }
        }
      }
    }
  }
}