Remove grow box rect support, browser part.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

Index: chrome/browser/ui/cocoa/browser_window_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_cocoa.mm b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
index ecbada62435369634490c4dd20f5b37231b9a1e8..fe5eb1f68b03ecee624fecdacf7c5d4f71ca41c2 100644
--- a/chrome/browser/ui/cocoa/browser_window_cocoa.mm
+++ b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
@@ -515,13 +515,6 @@ bool BrowserWindowCocoa::IsToolbarVisible() const {
          browser_->SupportsWindowFeature(Browser::FEATURE_LOCATIONBAR);
 }
 
-gfx::Rect BrowserWindowCocoa::GetRootWindowResizerRect() const {
-  if (IsDownloadShelfVisible())
-    return gfx::Rect();
-  NSRect tabRect = [controller_ selectedTabGrowBoxRect];
-  return gfx::Rect(NSRectToCGRect(tabRect));
-}
-
 void BrowserWindowCocoa::AddFindBar(
     FindBarCocoaController* find_bar_cocoa_controller) {
   [controller_ addFindBar:find_bar_cocoa_controller];