[3/3] AudioEffect: Add a stereo widener effect

Change-Id: Iab2035c5601394b060e7e77e85ad85aca6e4c89f
[3/3] AudioFX: Add center frequency param to bassboost

Change-Id: I49da8e5ab24502d0de5c09b7fc9f4b8a51bead60
Fix Build: Add needed @hide to some fields and methods

Change-Id: I41999eb503f56652beb6e99a54045946cf6c6ca1
Themes: Set bounds on iconUpon

Change-Id: I90720b87ed6d5c30f342bd0e1c149e8a6e238d6e
Themes: Get resources with an explicit theme attached.

Change-Id: If04e82a13250f520d70b58991586c8ce38f0ecb1