Coalesce CameraThreadState and AttributionAndPermissionUtils

The calling UID / PID are ways of attributing the camera client to
the caller, and so fall under the scope of this utility class.

Change-Id: I06af9264d1ca68eaccc4c6e4c01b9d09dd20e5ad
Bug: 190657833
Test: CtsCameraTestCases
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
index 59828fb..9513eeb 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
@@ -20,7 +20,6 @@
 
 #include <com_android_internal_camera_flags.h>
 #include <cutils/properties.h>
-#include <utils/CameraThreadState.h>
 #include <utils/Log.h>
 #include <utils/SessionConfigurationUtils.h>
 #include <utils/Trace.h>
@@ -2204,7 +2203,7 @@
 // TODO: move to Camera2ClientBase
 bool CameraDeviceClient::enforceRequestPermissions(CameraMetadata& metadata) {
 
-    const int pid = CameraThreadState::getCallingPid();
+    const int pid = getCallingPid();
     const int selfPid = getpid();
     camera_metadata_entry_t entry;
 
@@ -2243,7 +2242,7 @@
         String16 permissionString =
             toString16("android.permission.CAMERA_DISABLE_TRANSMIT_LED");
         if (!checkCallingPermission(permissionString)) {
-            const int uid = CameraThreadState::getCallingUid();
+            const int uid = getCallingUid();
             ALOGE("Permission Denial: "
                   "can't disable transmit LED pid=%d, uid=%d", pid, uid);
             return false;