Camera2: Factor out FrameProcessor.

Move FrameProcessor to its own file, add necessary interfaces to
Camera2Client.

Bug: 6243944
Change-Id: I8d1b8280a65d2822461ebe6b6c9de17992b34276
diff --git a/services/camera/libcameraservice/Android.mk b/services/camera/libcameraservice/Android.mk
index 391c319..eac6163 100644
--- a/services/camera/libcameraservice/Android.mk
+++ b/services/camera/libcameraservice/Android.mk
@@ -12,7 +12,8 @@
     Camera2Client.cpp \
     Camera2Device.cpp \
     camera2/CameraMetadata.cpp \
-    camera2/Parameters.cpp
+    camera2/Parameters.cpp \
+    camera2/FrameProcessor.cpp
 
 LOCAL_SHARED_LIBRARIES:= \
     libui \