bindings: Use V8 MaybeLocal APIs in V8DeviceMotionEventCustom

Source/bindings/modules/v8/custom/V8DeviceMotionEventCustom.cpp

Index: Source/bindings/modules/v8/custom/V8DeviceMotionEventCustom.cpp
diff --git a/Source/bindings/modules/v8/custom/V8DeviceMotionEventCustom.cpp b/Source/bindings/modules/v8/custom/V8DeviceMotionEventCustom.cpp
index be8d12d3809aa2d30125558c971a5792ca2eb8dc..5b04dcd84cab14042d4f1260c9feb9f20f6078cd 100644
--- a/Source/bindings/modules/v8/custom/V8DeviceMotionEventCustom.cpp
+++ b/Source/bindings/modules/v8/custom/V8DeviceMotionEventCustom.cpp
@@ -39,8 +39,7 @@ DeviceMotionData::Acceleration* readAccelerationArgument(v8::Local<v8::Value> va
     if (isUndefinedOrNull(value))
         return nullptr;
 
-    // Given the test above, this will always yield an object.
-    v8::Local<v8::Object> object = value->ToObject(isolate);
+    CALL_V8_WITH_CHECK_MAYBELOCAL_DEFAULT(v8::Object, object, value->ToObject(isolate->GetCurrentContext()), nullptr);
 
     v8::Local<v8::Value> xValue = object->Get(v8AtomicString(isolate, "x"));
     if (xValue.IsEmpty())
@@ -71,8 +70,7 @@ DeviceMotionData::RotationRate* readRotationRateArgument(v8::Local<v8::Value> va
     if (isUndefinedOrNull(value))
         return nullptr;
 
-    // Given the test above, this will always yield an object.
-    v8::Local<v8::Object> object = value->ToObject(isolate);
+    CALL_V8_WITH_CHECK_MAYBELOCAL_DEFAULT(v8::Object, object, value->ToObject(isolate->GetCurrentContext()), nullptr);
 
     v8::Local<v8::Value> alphaValue = object->Get(v8AtomicString(isolate, "alpha"));
     if (alphaValue.IsEmpty())