Remove hardware check that enables always-on hotwording.

BUG=448859

Review URL: https://codereview.chromium.org/805943005

Cr-Commit-Position: refs/heads/master@{#311797}

chrome/browser/search/hotword_service_factory.cc

@@ -47,6 +47,9 @@ 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;
@@ -59,6 +62,7 @@ bool HotwordServiceFactory::IsHotwordHardwareAvailable() {
     }
   }
 #endif
+#endif  // 0
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   return command_line->HasSwitch(switches::kEnableExperimentalHotwordHardware);
 }