Apply OwnPtr|PassOwnPtr to handle member variables and arguments in MIDIClient

Source/modules/webmidi/MIDIController.cpp

Index: Source/modules/webmidi/MIDIController.cpp
diff --git a/Source/modules/webmidi/MIDIController.cpp b/Source/modules/webmidi/MIDIController.cpp
index 6d3ad053b4efcd8e54e34c016108a9b3cd17082c..2aa4b629001c28b2abba47b40e8d2653eb8ddd01 100644
--- a/Source/modules/webmidi/MIDIController.cpp
+++ b/Source/modules/webmidi/MIDIController.cpp
@@ -41,7 +41,7 @@ const char* MIDIController::supplementName()
     return "MIDIController";
 }
 
-MIDIController::MIDIController(MIDIClient* client)
+MIDIController::MIDIController(PassOwnPtr<MIDIClient> client)
     : m_client(client)
 {
     ASSERT(client);
@@ -51,7 +51,7 @@ MIDIController::~MIDIController()
 {
 }
 
-PassOwnPtr<MIDIController> MIDIController::create(MIDIClient* client)
+PassOwnPtr<MIDIController> MIDIController::create(PassOwnPtr<MIDIClient> client)
 {
     return adoptPtr(new MIDIController(client));
 }
@@ -66,7 +66,7 @@ void MIDIController::cancelSysexPermissionRequest(MIDIAccess* access)
     m_client->cancelSysexPermissionRequest(access);
 }
 
-void provideMIDITo(Page& page, MIDIClient* client)
+void provideMIDITo(Page& page, PassOwnPtr<MIDIClient> client)
 {
     MIDIController::provideTo(page, MIDIController::supplementName(), MIDIController::create(client));
 }