This changelist represents the necessary merger of two others:...

chrome/browser/cocoa/test_event_utils.mm

+// Copyright (c) 2009 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 <Cocoa/Cocoa.h>
+
+#include "chrome/browser/cocoa/test_event_utils.h"
+
+ScopedClassSwizzler::ScopedClassSwizzler(Class target, Class source,
+                                         SEL selector) {
+  old_selector_impl_ = class_getInstanceMethod(target, selector);
+  new_selector_impl_ = class_getInstanceMethod(source, selector);
+  method_exchangeImplementations(old_selector_impl_, new_selector_impl_);
+}
+
+ScopedClassSwizzler::~ScopedClassSwizzler() {
+  method_exchangeImplementations(old_selector_impl_, new_selector_impl_);
+}
+
+namespace test_event_utils {
+
+NSEvent* MakeMouseEvent(NSEventType type, NSUInteger modifiers) {
+  if (type == NSOtherMouseUp) {
+    // To synthesize middle clicks we need to create a CGEvent with the
+    // "center" button flags so that our resulting NSEvent will have the
+    // appropriate buttonNumber field. NSEvent provides no way to create a
+    // mouse event with a buttonNumber directly.
+    CGPoint location = { 0, 0 };
+    CGEventRef event = CGEventCreateMouseEvent(NULL, kCGEventOtherMouseUp,
+                                               location,
+                                               kCGMouseButtonCenter);
+    return [NSEvent eventWithCGEvent:event];
+  }
+  return [NSEvent mouseEventWithType:type
+                            location:NSMakePoint(0, 0)
+                       modifierFlags:modifiers
+                           timestamp:0
+                        windowNumber:0
+                             context:nil
+                         eventNumber:0
+                          clickCount:1
+                            pressure:1.0];
+}
+
+}  // namespace test_event_utils