Remove grow box rect support, browser part.

chrome/browser/ui/views/frame/browser_view.cc

Index: chrome/browser/ui/views/frame/browser_view.cc
diff --git a/chrome/browser/ui/views/frame/browser_view.cc b/chrome/browser/ui/views/frame/browser_view.cc
index dbaf157c6e078beaa61153346d4d98c12344512c..e1e577ffc68c732c09858d281a72029929a8603c 100644
--- a/chrome/browser/ui/views/frame/browser_view.cc
+++ b/chrome/browser/ui/views/frame/browser_view.cc
@@ -1229,12 +1229,6 @@ bool BrowserView::IsToolbarVisible() const {
          toolbar_;
 }
 
-gfx::Rect BrowserView::GetRootWindowResizerRect() const {
-  // Views does not support resizer rects because they caused page cycler
-  // performance regressions when they were added. See crrev.com/9654
-  return gfx::Rect();
-}
-
 void BrowserView::ShowUpdateChromeDialog() {
   UpdateRecommendedMessageBox::Show(GetNativeWindow());
 }