[Mac] Reposition the status bubble whenever adding it to a window....

chrome/browser/cocoa/status_bubble_mac_unittest.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.
 
 #include <Cocoa/Cocoa.h>
 
 #include "base/scoped_nsobject.h"
 #include "base/scoped_ptr.h"
 #import "chrome/browser/cocoa/bubble_view.h"
 #import "chrome/browser/cocoa/browser_test_helper.h"
@@ skipping 440 matching lines @@
   frame.size.width += 50.0;   // (fairly arbitrary nonzero value)
   frame.size.height += 50.0;  // (fairly arbitrary nonzero value)
   [window setFrame:frame display:YES];
   bubble_->UpdateSizeAndPosition();
   rect_after = [GetWindow() frame];
   EXPECT_EQ(rect_before.origin.x, rect_after.origin.x);
   EXPECT_EQ(rect_before.origin.y, rect_after.origin.y);
   EXPECT_NE(rect_before.size.width, rect_after.size.width);
   EXPECT_EQ(rect_before.size.height, rect_after.size.height);
 }
+
+TEST_F(StatusBubbleMacTest, MovingWindowUpdatesPosition) {
+  NSWindow* window = test_window();
+
+  // Show the bubble and make sure it has the same origin as |window|.
+  bubble_->SetStatus(L"Showing");
+  NSWindow* child = GetWindow();
+  EXPECT_TRUE(NSEqualPoints([window frame].origin, [child frame].origin));
+
+  // Hide the bubble, move the window, and show it again.
+  bubble_->Hide();
+  NSRect frame = [window frame];
+  frame.origin.x += 50;
+  [window setFrame:frame display:YES];
+  bubble_->SetStatus(L"Reshowing");
+
+  // The bubble should reattach in the correct location.
+  child = GetWindow();
+  EXPECT_TRUE(NSEqualPoints([window frame].origin, [child frame].origin));
+}