Fixed sort() comparison in CameraUtils.selectOptimalPreviewSize().

Fixed rounding error in CameraUtils.selectOptimalPreviewSize() and added real-world test data.

Fixed sort() comparison in CameraUtils.selectOptimalPreviewSize().
Bug 967237 - Shorten the Zh layout labels
Bug 963377 - [B2G][Keyboard] Keyboard blocks "cancel" / "ok" options
 - Still reset keyboard state when the keyboard frame is hidden, so that
   the keyboard won't be triggered by the keyboard app after it has
   been dismissed.
Bug 952312 - Screen reader settings
Merge pull request #15781 from eeejay/bug-952312

Bug 952312 - Screen reader settings. r=kaze
Merge pull request #15976 from RudyLu/keyboard/Bug963377-keyboard_covers_value_selector

Bug 963377 - [B2G][Keyboard] Keyboard blocks "cancel" / "ok" options, r=timdream
Bug 968116 - Clear pairingAddress when users cancel the pairing in passive mode
Merge pull request #15956 from justindarc/master

Fixed sort() comparison in CameraUtils.selectOptimalPreviewSize().
Merge pull request #16018 from crh0716/968116

Bug 968116 - Clear pairingAddress when users cancel the pairing in passive mode r=evelyn
Merge pull request #15969 from timdream/zh-layout-rename

Bug 967237 - Shorten the Zh layout labels, r=rudyl