media/midi: Fix warnings found by clang chromium-style plugin on Windows.

http://build.chromium.org/p/chromium.fyi/builders/CrWinClang/builds/631/steps/compile/logs/stdio

This fixes the following kind or warnings:

warning(clang): [chromium-style] Complex constructor has an inlined body.
warning(clang): [chromium-style] Complex destructor has an inline body.

After this, "Complex constructor" warnings will be gone, assuming more does
not crap in.

BUG=467287
R=thakis@chromium.org,toyoshim@chromium.org

Review URL: https://codereview.chromium.org/1117603002

Cr-Commit-Position: refs/heads/master@{#327486}

2 files changed, 9 insertions, 2 deletions

diff --git a/media/midi/midi_manager_win.cc b/media/midi/midi_manager_win.cc
index a911ff6..5937278 100644
--- a/media/midi/midi_manager_win.cc
+++ b/media/midi/midi_manager_win.cc
@@ -1093,6 +1093,13 @@ class MidiServiceWinImpl : public MidiServiceWin,
 
 }  // namespace
 
+MidiManagerWin::MidiManagerWin() {
+}
+
+MidiManagerWin::~MidiManagerWin() {
+  midi_service_.reset();
+}
+
 void MidiManagerWin::StartInitialization() {
   midi_service_.reset(new MidiServiceWinImpl);
   // Note that |CompleteInitialization()| will be called from the callback.
diff --git a/media/midi/midi_manager_win.h b/media/midi/midi_manager_win.h
index 73c1fe5..eef70eb 100644
--- a/media/midi/midi_manager_win.h
+++ b/media/midi/midi_manager_win.h
@@ -41,8 +41,8 @@ class MidiServiceWin {
 
 class MidiManagerWin final : public MidiManager, public MidiServiceWinDelegate {
  public:
-  MidiManagerWin() {}
-  ~MidiManagerWin() override { midi_service_.reset(); }
+  MidiManagerWin();
+  ~MidiManagerWin() override;
 
   // MidiManager overrides:
   void StartInitialization() final;