Called to retrieve an extension resource that would normally be loaded
from disk (e.g. if a file parameter is specified to
chrome.tabs.executeScript). |extension| and |browser| are the source of
the resource request. |file| is the requested relative file path. To
handle the resource request return true (1) and execute |callback| either
synchronously or asynchronously. For the default behavior which reads the
resource from the extension directory on disk return false (0).
Localization substitutions will not be applied to resources handled via
this function.
Called to retrieve an extension resource that would normally be loaded from disk (e.g. if a file parameter is specified to chrome.tabs.executeScript). |extension| and |browser| are the source of the resource request. |file| is the requested relative file path. To handle the resource request return true (1) and execute |callback| either synchronously or asynchronously. For the default behavior which reads the resource from the extension directory on disk return false (0). Localization substitutions will not be applied to resources handled via this function.