libcameraservice: Refactor the CameraServiceProxyWrapper into a class.

This is necessary for writing a unit test for camera permissions that
checks behavior when the device policy manager has disabled the camera.
Using the true DevicePolicyManager service would require a test be run
while the device has a work profile - a much simpler method would be to
fake the results from CameraServiceProxyWrapper::isCameraDisabled with
an override.

The CameraServiceProxyWrapper is now managed by a shared_ptr that
originates in CameraService, unless this is overridden by an outside
source (cameraservice_test). As a consequence of this, some refactoring
has been done to CameraSessionStatsWrapper class to avoid circular
ownership between it and its parent (CameraServiceProxyWrapper).

Change-Id: Iad4ee87f5c5ab849eee65b72f46f77faf37f4d25
Test: CtsCameraTestCases
diff --git a/services/camera/libcameraservice/device3/Camera3Device.cpp b/services/camera/libcameraservice/device3/Camera3Device.cpp
index 7f83849..ebfa1d6 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Device.cpp
@@ -63,7 +63,6 @@
 #include "utils/CameraThreadState.h"
 #include "utils/SessionConfigurationUtils.h"
 #include "utils/TraceHFR.h"
-#include "utils/CameraServiceProxyWrapper.h"
 
 #include <algorithm>
 #include <tuple>
@@ -73,7 +72,9 @@
 
 namespace android {
 
-Camera3Device::Camera3Device(const String8 &id, bool overrideForPerfClass, bool legacyClient):
+Camera3Device::Camera3Device(std::shared_ptr<CameraServiceProxyWrapper>& cameraServiceProxyWrapper,
+        const String8 &id, bool overrideForPerfClass, bool legacyClient):
+        mCameraServiceProxyWrapper(cameraServiceProxyWrapper),
         mId(id),
         mLegacyClient(legacyClient),
         mOperatingMode(NO_MODE),
@@ -2257,7 +2258,7 @@
         ALOGE("%s: Failed to pause streaming: %d", __FUNCTION__, rc);
     }
 
-    CameraServiceProxyWrapper::logStreamConfigured(mId, mOperatingMode, true /*internalReconfig*/,
+    mCameraServiceProxyWrapper->logStreamConfigured(mId, mOperatingMode, true /*internalReconfig*/,
         ns2ms(systemTime() - startTime));
 
     if (markClientActive) {