4224 [camera_web] Add support for a zoom level (cla: yes, waiting for tree to go green, p: camera, platform-web)

4225 [camera_web] Rename CameraSettings to CameraService (cla: yes, waiting for tree to go green, p: camera, platform-web)

4226 [camera_web] Don’t request full-screen mode in unlockCaptureOrientation (cla: yes, waiting for tree to go green, p: camera, platform-web)

4227 [camera_web] Add setFlashMode comments (cla: yes, waiting for tree to go green, p: camera, platform-web)

4228 [image_picker] Fix pickImage not returning on iOS when dismissing the PHPicker view by swiping down. (cla: yes, waiting for tree to go green, p: image_picker, platform-ios)