surfaceflinger: remove ISurfaceComposer.h from RenderArea

RenderArea can be made more generic by removing ISurfaceComposer.h
dependency.  The caller also prefers to work with
ui::Transform::orientation_flags than ISurfaceComposer::Rotation (we
want to move updateDimensions to the caller).

Bug: 113041375
Test: take screenshot, rotate screen, screencap
Change-Id: I16e1392d5c92c2f423f98307e867918415404d26
Merged-In: I16e1392d5c92c2f423f98307e867918415404d26