Re-enable always-on hotwording for m42 on supported hardware.

chrome/browser/search/hotword_service_factory.cc

Index: chrome/browser/search/hotword_service_factory.cc
diff --git a/chrome/browser/search/hotword_service_factory.cc b/chrome/browser/search/hotword_service_factory.cc
index 174f375a4ffcf42e5a020caaf57eb2d4ed55b6c6..8884ad6c9f9becf3a80a9e1fde44c07e53ecd4c0 100644
--- a/chrome/browser/search/hotword_service_factory.cc
+++ b/chrome/browser/search/hotword_service_factory.cc
@@ -47,9 +47,6 @@ bool HotwordServiceFactory::IsHotwordAllowed(BrowserContext* context) {
 
 // static
 bool HotwordServiceFactory::IsHotwordHardwareAvailable() {
-// Temporarily disabling hotword hardware check for M41. Will be
-// re-enabled for M42.
-#if 0
 #if defined(OS_CHROMEOS)
   if (chromeos::CrasAudioHandler::IsInitialized()) {
     chromeos::AudioDeviceList devices;
@@ -62,7 +59,6 @@ bool HotwordServiceFactory::IsHotwordHardwareAvailable() {
     }
   }
 #endif
-#endif  // 0
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   return command_line->HasSwitch(switches::kEnableExperimentalHotwordHardware);
 }