[Mac] Port browser action popup test to mac.

chrome/browser/cocoa/extensions/extension_popup_controller.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 "chrome/browser/cocoa/extensions/extension_popup_controller.h"
 
 #include <algorithm>
 
 #include "chrome/browser/browser.h"
 #import "chrome/browser/cocoa/browser_window_cocoa.h"
@@ skipping 172 matching lines @@
 // We want this to be a child of a browser window. addChildWindow: (called from
 // this function) will bring the window on-screen; unfortunately,
 // [NSWindowController showWindow:] will also bring it on-screen (but will cause
 // unexpected changes to the window's position). We cannot have an
 // addChildWindow: and a subsequent showWindow:. Thus, we have our own version.
 - (void)showWindow:(id)sender {
   [parentWindow_ addChildWindow:[self window] ordered:NSWindowAbove];
   [[self window] makeKeyAndOrderFront:self];
 }
 
+// Private (TestingAPI)
+- (NSView*)view {
+  return extensionView_;
+}
+
+// Private (TestingAPI)
++ (NSSize)minPopupSize {
+  NSSize minSize = {kMinWidth, kMinHeight};
+  return minSize;
+}
+
+// Private (TestingAPI)
++ (NSSize)maxPopupSize {
+  NSSize maxSize = {kMaxWidth, kMaxHeight};
+  return maxSize;
+}
+
 @end