| The runtime library contains: |
| 1) Implementation of the WebAPK service. The service implements functionality |
| which Chrome delegates to the WebAPK such as displaying notifications. |
| 2) Logic to send intent to Chrome to launch Chrome in WebAPK mode. |
| |
| The library is loaded by a ShellAPK which contains the WebAPK's manifest and |
| code to load the runtime library. |
| |
| The latest version of the runtime library is extracted from Chrome's APK by the |
| ShellAPK when it is launched. Since the ShellAPK is updated asynchronously, the |
| runtime library may run within an old ShellAPK. For instance, the ShellAPK's |
| Android manifest may be missing some of the permissions that the runtime library |
| is expecting. |
| |
| The number in runtime_library_version.gni must be incremented whenever the |
| runtime library is updated. The WebAPK re-extracts the runtime library from the |
| Chrome APK when the version number is incremented. |
