HiDPI: Fix extension bubble size

chrome/browser/ui/cocoa/browser_window_controller.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 
 #include <cmath>
 #include <numeric>
 
 #include "base/command_line.h"
@@ skipping 1305 matching lines @@
   NSScreen* screen = [sourceWindow screen];
   windowRect.origin.y = NSHeight([screen frame]) - NSMaxY(windowRect);
   gfx::Rect browserRect(windowRect.origin.x, windowRect.origin.y,
                         NSWidth(windowRect), NSHeight(windowRect));
 
   NSRect sourceTabRect = [tabView frame];
   NSView* tabStrip = [self tabStripView];
 
   // Pushes tabView's frame back inside the tabstrip.
   NSSize tabOverflow =
-      [self overflowFrom:[tabStrip convertRectToBase:sourceTabRect]
+      [self overflowFrom:[tabStrip convertRect:sourceTabRect toView:nil]
                       to:[tabStrip frame]];
   NSRect tabRect = NSOffsetRect(sourceTabRect,
                                 -tabOverflow.width, -tabOverflow.height);
 
   // Before detaching the tab, store the pinned state.
   bool isPinned = browser_->IsTabPinned(index);
 
   // Detach it from the source window, which just updates the model without
   // deleting the tab contents. This needs to come before creating the new
   // Browser because it clears the WebContents' delegate, which gets hooked
@@ skipping 880 matching lines @@
 
 - (BOOL)supportsBookmarkBar {
   return [self supportsWindowFeature:Browser::FEATURE_BOOKMARKBAR];
 }
 
 - (BOOL)isTabbedWindow {
   return browser_->is_type_tabbed();
 }
 
 @end  // @implementation BrowserWindowController(WindowType)