Download |image_url| and execute |callback| on completion with the images
received from the renderer. If |is_favicon| is true (1) then cookies are
not sent and not accepted during download. Images with density independent
pixel (DIP) sizes larger than |max_image_size| are filtered out from the
image results. Versions of the image at different scale factors may be
downloaded up to the maximum scale factor supported by the system. If
there are no image results <= |max_image_size| then the smallest image is
resized to |max_image_size| and is the only result. A |max_image_size| of
0 means unlimited. If |bypass_cache| is true (1) then |image_url| is
requested from the server even if it is present in the browser cache.
Download |image_url| and execute |callback| on completion with the images received from the renderer. If |is_favicon| is true (1) then cookies are not sent and not accepted during download. Images with density independent pixel (DIP) sizes larger than |max_image_size| are filtered out from the image results. Versions of the image at different scale factors may be downloaded up to the maximum scale factor supported by the system. If there are no image results <= |max_image_size| then the smallest image is resized to |max_image_size| and is the only result. A |max_image_size| of 0 means unlimited. If |bypass_cache| is true (1) then |image_url| is requested from the server even if it is present in the browser cache.