Ensure dialogs are centered on browser windows.

chrome/browser/ui/cocoa/browser_window_controller_private.mm

Index: chrome/browser/ui/cocoa/browser_window_controller_private.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller_private.mm b/chrome/browser/ui/cocoa/browser_window_controller_private.mm
index 6a6a4f0bea3565b562db7358d194b799c001ab11..0a39770740065d023fbef887aed3ee095008082a 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller_private.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller_private.mm
@@ -33,7 +33,6 @@
 #import "chrome/browser/ui/cocoa/profiles/avatar_icon_controller.h"
 #import "chrome/browser/ui/cocoa/status_bubble_mac.h"
 #import "chrome/browser/ui/cocoa/tab_contents/overlayable_contents_controller.h"
-#import "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_strip_view.h"
 #import "chrome/browser/ui/cocoa/toolbar/toolbar_controller.h"
 #import "chrome/browser/ui/cocoa/version_independent_window.h"
@@ -287,20 +286,6 @@ willPositionSheet:(NSWindow*)sheet
   // Normally, we don't need to tell the toolbar whether or not to show the
   // divider, but things break down during animation.
   [toolbarController_ setDividerOpacity:[self toolbarDividerOpacity]];
-
-  // Update the position of the active constrained window sheet.  We force this
-  // here because the |sheetParentView| may not have been resized (e.g., to
-  // prevent jank during a fullscreen mode transition), but constrained window
-  // sheets also compute their position based on the bookmark bar and toolbar.
-  content::WebContents* const activeWebContents =
-      browser_->tab_strip_model()->GetActiveWebContents();
-  NSView* const sheetParentView = activeWebContents ?
-      GetSheetParentViewForWebContents(activeWebContents) : nil;
-  if (sheetParentView) {
-    [[NSNotificationCenter defaultCenter]
-      postNotificationName:NSViewFrameDidChangeNotification
-                    object:sheetParentView];
-  }
 }
 
 - (CGFloat)floatingBarHeight {