Fix bug when unplugging an audio input device whilst using speech input.

media/audio/win/wavein_input_win.cc

Index: media/audio/win/wavein_input_win.cc
diff --git a/media/audio/win/wavein_input_win.cc b/media/audio/win/wavein_input_win.cc
index fdc08b875d73e219b5fe3f0e189b9fda62d4182e..a3a6940b7b701be576419a9f4664215a25c039e7 100644
--- a/media/audio/win/wavein_input_win.cc
+++ b/media/audio/win/wavein_input_win.cc
@@ -14,6 +14,10 @@
 #include "media/audio/audio_util.h"
 #include "media/audio/win/audio_manager_win.h"
 
+namespace {
+const int kCallbackTimeout = 1000; // One second.

[Satish, 2011/06/14 14:28:04]

rename to kStopInputStreamCallbackTimeout to be more specific? Also could
increase to a couple more seconds to reduce false positives

[allanwoj, 2011/06/14 15:03:12]

Done.

+}
+
 // Our sound buffers are allocated once and kept in a linked list using the
 // the WAVEHDR::dwUser variable. The last buffer points to the first buffer.
 static WAVEHDR* GetNextBuffer(WAVEHDR* current) {
@@ -130,7 +134,8 @@ void PCMWaveInAudioInputStream::Stop() {
     return;
   state_ = kStateStopping;
   // Wait for the callback to finish, it will signal us when ready to be reset.
-  if (WAIT_OBJECT_0 != ::WaitForSingleObject(stopped_event_, INFINITE)) {
+  if (WAIT_OBJECT_0 !=
+      ::WaitForSingleObject(stopped_event_, kCallbackTimeout)) {
     HandleError(::GetLastError());
     return;
   }