Returns true (1) if the preference with the specified |name| can be modified using SetPreference. As one example preferences set via the command-line usually cannot be modified. This function must be called on the browser process UI thread.
See Implementation
Returns true (1) if the preference with the specified |name| can be modified using SetPreference. As one example preferences set via the command-line usually cannot be modified. This function must be called on the browser process UI thread.