mac: Prepare for -Wunused-functions.

ui/events/event.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/events/event.h"
 
 #if defined(USE_X11)
 #include <X11/Xlib.h>
 #endif
 
@@ skipping 26 matching lines @@
   return event;
 #elif defined(USE_OZONE)
   return NULL;
 #else
   NOTREACHED() <<
       "Don't know how to copy base::NativeEvent for this platform";
   return NULL;
 #endif
 }
 
-gfx::Point CalibratePoint(const gfx::Point& point,
-                          const gfx::Size& from,
-                          const gfx::Size& to) {
-  float calibrated_x =
-      static_cast<float>(point.x()) * to.width() / from.width();
-  float calibrated_y =
-      static_cast<float>(point.y()) * to.height() / from.height();
-  return gfx::Point(static_cast<int>(floorf(calibrated_x + 0.5f)),
-                    static_cast<int>(floorf(calibrated_y + 0.5f)));
-}
-
 std::string EventTypeName(ui::EventType type) {
 #define RETURN_IF_TYPE(t) if (type == ui::t)  return #t
 #define CASE_TYPE(t) case ui::t:  return #t
   switch (type) {
     CASE_TYPE(ET_UNKNOWN);
     CASE_TYPE(ET_MOUSE_PRESSED);
     CASE_TYPE(ET_MOUSE_DRAGGED);
     CASE_TYPE(ET_MOUSE_RELEASED);
     CASE_TYPE(ET_MOUSE_MOVED);
     CASE_TYPE(ET_MOUSE_ENTERED);
@@ skipping 651 matching lines @@
 int GestureEvent::GetLowestTouchId() const {
   if (touch_ids_bitfield_ == 0)
     return -1;
   int i = -1;
   // Find the index of the least significant 1 bit
   while (!(1 << ++i & touch_ids_bitfield_));
   return i;
 }
 
 }  // namespace ui