Fix typo in browser_window.h

R=sky@chromium.org

Bug: None
Change-Id: Ie3ce9e126def94576b078c27063048917948b299
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2353111
Auto-Submit: Nick Yamane <nickdiego@igalia.com>
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797480}

chrome/browser/ui/browser_window.h

@@ -301,7 +301,7 @@ class BrowserWindow : public ui::BaseWindow {
   // Called from toolbar subviews during their show/hide animations.
   virtual void ToolbarSizeChanged(bool is_animating) = 0;
 
-  // Called when the accociated window's tab dragging status changed.
+  // Called when the associated window's tab dragging status changed.
   virtual void TabDraggingStatusChanged(bool is_dragging) = 0;
 
   // Focuses the app menu like it was a menu bar.