Web MIDI: use new Blink APIs to be free from depracated ones

content/shell/renderer/test_runner/mock_web_midi_accessor.cc

Index: content/shell/renderer/test_runner/mock_web_midi_accessor.cc
diff --git a/content/shell/renderer/test_runner/mock_web_midi_accessor.cc b/content/shell/renderer/test_runner/mock_web_midi_accessor.cc
index c1300193965f6248964a178dde4daf53a7d3e3d7..32ebe622f48bf4dad4289fd77745c416fa21d813 100644
--- a/content/shell/renderer/test_runner/mock_web_midi_accessor.cc
+++ b/content/shell/renderer/test_runner/mock_web_midi_accessor.cc
@@ -49,11 +49,13 @@ void MockWebMIDIAccessor::startSession() {
   client_->didAddInputPort("MockInputID",
                            "MockInputManufacturer",
                            "MockInputName",
-                           "MockInputVersion");
+                           "MockInputVersion",
+                           true);

[tkent, 2014/10/20 05:59:33]

literal bool argument is not good for code readability.
If we'll add more literal bool for this argument , we should change the argument
an enum. Otherwise, please add a code comment or a constant symbol.  e.g.
   didAddInputPort(...., true /* active */);

   const bool active = true;
   didAddInputPort(..., active);

[Takashi Toyoshima, 2014/10/20 06:41:29]

Done.

   client_->didAddOutputPort("MockOutputID",
                             "MockOutputManufacturer",
                             "MockOutputName",
-                            "MockOutputVersion");
+                            "MockOutputVersion",
+                            true);
   interfaces_->GetDelegate()->PostTask(new DidStartSessionTask(
       this, client_, interfaces_->GetTestRunner()->midiAccessorResult()));
 }