No longer need to pass storage paths to WebRequestContext.cleanupPrivateBrowsingFiles()
No longer need to pass storage paths to WebRequestContext.cleanupPrivateBrowsingFiles()

Requires the following changes to external/webkit and packages/apps/Browser
https://android-git.corp.google.com/g/81781
https://android-git.corp.google.com/g/81780

Bug: 3232569
Change-Id: I0247f3db25edfdc95363a5a94296458b20456a46

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base