Adds the UserInputMonitor implementation for Windows.

media/base/user_input_monitor_mac.cc

Index: media/base/user_input_monitor_mac.cc
diff --git a/media/base/user_input_monitor_mac.cc b/media/base/user_input_monitor_mac.cc
index 3d19134f321ded835bb3ce070139bda1b4dc5019..91aa458a23b3ec2fe1523212dfd3055f7e1d8d97 100644
--- a/media/base/user_input_monitor_mac.cc
+++ b/media/base/user_input_monitor_mac.cc
@@ -14,11 +14,11 @@ class UserInputMonitorMac : public UserInputMonitor {
   UserInputMonitorMac();
   virtual ~UserInputMonitorMac();
 
+  virtual void AddMouseListener(MouseEventListener* listener) OVERRIDE;
+  virtual void RemoveMouseListener(MouseEventListener* listener) OVERRIDE;
   virtual size_t GetKeyPressCount() const OVERRIDE;
 
  private:
-  virtual void StartMouseMonitoring() OVERRIDE;
-  virtual void StopMouseMonitoring() OVERRIDE;
   virtual void StartKeyboardMonitoring() OVERRIDE;
   virtual void StopKeyboardMonitoring() OVERRIDE;
 
@@ -29,6 +29,12 @@ UserInputMonitorMac::UserInputMonitorMac() {}
 
 UserInputMonitorMac::~UserInputMonitorMac() {}
 
+// TODO(jiayl): add the impl.
+void UserInputMonitorMac::AddMouseListener() { NOTIMPLEMENTED(); }
+
+// TODO(jiayl): add the impl.
+void UserInputMonitorMac::RemoveMouseListener() { NOTIMPLEMENTED(); }
+
 size_t UserInputMonitorMac::GetKeyPressCount() const {
   // Use |kCGEventSourceStateHIDSystemState| since we only want to count
   // hardware generated events.
@@ -36,12 +42,6 @@ size_t UserInputMonitorMac::GetKeyPressCount() const {
                                           kCGEventKeyDown);
 }
 
-// TODO(jiayl): add the impl.
-void UserInputMonitorMac::StartMouseMonitoring() { NOTIMPLEMENTED(); }
-
-// TODO(jiayl): add the impl.
-void UserInputMonitorMac::StopMouseMonitoring() { NOTIMPLEMENTED(); }
-
 void UserInputMonitorMac::StartKeyboardMonitoring() {}
 
 void UserInputMonitorMac::StopKeyboardMonitoring() {}