Set keyboard mic effect if available.

content/test/ppapi/ppapi_test.cc

Index: content/test/ppapi/ppapi_test.cc
diff --git a/content/test/ppapi/ppapi_test.cc b/content/test/ppapi/ppapi_test.cc
index 0807b6138b8a7576587ecdbf59f28121e33c23e9..96a4ec2035609e80bb6d907dade4984bccda39ef 100644
--- a/content/test/ppapi/ppapi_test.cc
+++ b/content/test/ppapi/ppapi_test.cc
@@ -17,6 +17,10 @@
 #include "ppapi/shared_impl/ppapi_switches.h"
 #include "ppapi/shared_impl/test_harness_utils.h"
 
+#if defined(OS_CHROMEOS)
+#include "chromeos/audio/cras_audio_handler.h"
+#endif
+
 namespace content {
 
 PPAPITestMessageHandler::PPAPITestMessageHandler() {
@@ -129,4 +133,18 @@ OutOfProcessPPAPITest::OutOfProcessPPAPITest() {
   in_process_ = false;
 }
 
+void OutOfProcessPPAPITest::SetUp() {
+#if defined(OS_CHROMEOS)
+    chromeos::CrasAudioHandler::InitializeForTesting();
+#endif
+  ContentBrowserTest::SetUp();
+}
+
+void OutOfProcessPPAPITest::TearDown() {
+  ContentBrowserTest::TearDown();
+#if defined(OS_CHROMEOS)
+    chromeos::CrasAudioHandler::Shutdown();
+#endif
+}
+
 }  // namespace content