import from UXP: Bug 1469309 - Remove an unused sensor type. (d3a845d2)

hal/Hal.cpp

@@ -593,6 +593,7 @@ UnregisterSensorObserver(SensorType aSensor, ISensorObserver *aObserver) {
   AssertMainThread();
 
   if (!gSensorObservers) {
+    HAL_ERR("Un-registering a sensor when none have been registered");
     return;
   }
 

hal/HalSensor.h

@@ -18,7 +18,6 @@ namespace hal {
  * If you add or change any here, do the same in GeckoHalDefines.java.
  */
 enum SensorType {
-  SENSOR_UNKNOWN = -1,
   SENSOR_ORIENTATION = 0,
   SENSOR_ACCELERATION = 1,
   SENSOR_PROXIMITY = 2,
@@ -63,7 +62,7 @@ namespace IPC {
   struct ParamTraits<mozilla::hal::SensorType>:
     public ContiguousEnumSerializer<
              mozilla::hal::SensorType,
-             mozilla::hal::SENSOR_UNKNOWN,
+             mozilla::hal::SENSOR_ORIENTATION,
              mozilla::hal::NUM_SENSOR_TYPE> {
   };
 

hal/sandbox/SandboxHal.cpp

@@ -15,6 +15,7 @@
 #include "mozilla/dom/battery/Types.h"
 #include "mozilla/dom/network/Types.h"
 #include "mozilla/dom/ScreenOrientation.h"
+#include "mozilla/EnumeratedRange.h"
 #include "mozilla/Observer.h"
 #include "mozilla/Unused.h"
 #include "nsAutoPtr.h"
@@ -432,9 +433,8 @@ public:
     hal::UnregisterBatteryObserver(this);
     hal::UnregisterNetworkObserver(this);
     hal::UnregisterScreenConfigurationObserver(this);
-    for (int32_t sensor = SENSOR_UNKNOWN + 1;
-         sensor < NUM_SENSOR_TYPE; ++sensor) {
-      hal::UnregisterSensorObserver(SensorType(sensor), this);
+    for (auto sensor : MakeEnumeratedRange(NUM_SENSOR_TYPE)) {
+      hal::UnregisterSensorObserver(sensor, this);
     }
     hal::UnregisterWakeLockObserver(this);
     hal::UnregisterSystemClockChangeObserver(this);