mac: Prepare for -Wunused-functions.

content/child/npapi/plugin_instance_mac.mm

 // Copyright (c) 2010 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.
 
 #import <AppKit/AppKit.h>
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "content/child/npapi/plugin_instance.h"
 
 // When C++ exceptions are disabled, the C++ library defines |try| and
 // |catch| so as to allow exception-expecting C++ code to build properly when
 // language support for exceptions is not present.  These macros interfere
 // with the use of |@try| and |@catch| in Objective-C files such as this one.
 // Undefine these macros here, after everything has been #included, since
 // there will be no C++ uses and only Objective-C uses from this point on.
 #undef try
 #undef catch
 
 namespace content {
 
-namespace {
-
-// Returns an autoreleased NSEvent constructed from the given np_event,
-// targeting the given window.
-NSEvent* NSEventForNPCocoaEvent(NPCocoaEvent* np_event, NSWindow* window) {
-  bool mouse_down = 1;
-  switch (np_event->type) {
-    case NPCocoaEventMouseDown:
-      mouse_down = 1;
-      break;
-    case NPCocoaEventMouseUp:
-      mouse_down = 0;
-      break;
-    default:
-      // If plugins start bringing up context menus for things other than
-      // clicks, this will need more plumbing; for now just log it and proceed
-      // as if it were a mouse down.
-      NOTREACHED();
-  }
-  NSEventType event_type = NSLeftMouseDown;
-  switch (np_event->data.mouse.buttonNumber) {
-    case 0:
-      event_type = mouse_down ? NSLeftMouseDown : NSLeftMouseUp;
-      break;
-    case 1:
-      event_type = mouse_down ? NSRightMouseDown : NSRightMouseUp;
-      break;
-    default:
-      event_type = mouse_down ? NSOtherMouseDown : NSOtherMouseUp;
-      break;
-  }
-
-  NSInteger click_count = np_event->data.mouse.clickCount;
-  NSInteger modifiers = np_event->data.mouse.modifierFlags;
-  // NPCocoaEvent doesn't have a timestamp, so just use the current time.
-  NSEvent* event =
-      [NSEvent mouseEventWithType:event_type
-                         location:NSZeroPoint
-                    modifierFlags:modifiers
-                        timestamp:[[NSApp currentEvent] timestamp]
-                     windowNumber:[window windowNumber]
-                          context:[NSGraphicsContext currentContext]
-                      eventNumber:0
-                       clickCount:click_count
-                         pressure:1.0];
-  return event;
-}
-
-}  // namespace
-
 NPError PluginInstance::PopUpContextMenu(NPMenu* menu) {
   if (!currently_handled_event_)
     return NPERR_GENERIC_ERROR;
 
   CGRect main_display_bounds = CGDisplayBounds(CGMainDisplayID());
   NSPoint screen_point = NSMakePoint(
       plugin_origin_.x() + currently_handled_event_->data.mouse.pluginX,
       plugin_origin_.y() + currently_handled_event_->data.mouse.pluginY);
   // Plugin offsets are upper-left based, so flip vertically for Cocoa.
   screen_point.y = main_display_bounds.size.height - screen_point.y;
@@ skipping 15 matching lines @@
                                                    NPCocoaEvent* event)
     : instance_(instance) {
   instance_->set_currently_handled_event(event);
 }
 
 ScopedCurrentPluginEvent::~ScopedCurrentPluginEvent() {
   instance_->set_currently_handled_event(NULL);
 }
 
 }  // namespace content