We were querying the application's FILEVERSIONINFO every time we needed to
figure out the path for storing BrowserContext data. Now we cache the path the
first time we need it, which is during application initialization and before IO
prohibitions begin.
Applications can use brightray::BrowserContext::prefs to get access to
preferences that are persisted between launches.
brightray::BrowserContext::RegisterPrefs must be used to register preferences
before they're accessed.
Updated libchromiumcontent to pull in preferences support.
* vendor/libchromiumcontent 3944c1c...b6a0d85 (2):
> Actually compile the base/prefs code
> Export symbols from base/prefs
