Fix data fetcher for light stop correctly on windows.

content/browser/device_sensors/data_fetcher_shared_memory_win.cc

Index: content/browser/device_sensors/data_fetcher_shared_memory_win.cc
diff --git a/content/browser/device_sensors/data_fetcher_shared_memory_win.cc b/content/browser/device_sensors/data_fetcher_shared_memory_win.cc
index 8abd447b82c0c000d6e3b83e873cb8b104cb28c8..cf9f5bfbc883e77531e0b259a4f6237c85b253e6 100644
--- a/content/browser/device_sensors/data_fetcher_shared_memory_win.cc
+++ b/content/browser/device_sensors/data_fetcher_shared_memory_win.cc
@@ -341,12 +341,13 @@ bool DataFetcherSharedMemory::Start(ConsumerType consumer_type, void* buffer) {
 
 bool DataFetcherSharedMemory::Stop(ConsumerType consumer_type) {
   DisableSensors(consumer_type);
-  SetBufferAvailableState(consumer_type, false);
   switch (consumer_type) {
     case CONSUMER_TYPE_ORIENTATION:
+      SetBufferAvailableState(consumer_type, false);
       orientation_buffer_ = nullptr;
       return true;
     case CONSUMER_TYPE_MOTION:
+      SetBufferAvailableState(consumer_type, false);
       motion_buffer_ = nullptr;
       return true;
     case CONSUMER_TYPE_LIGHT: