Remove grow box rect support, renderer part.

third_party/WebKit/Source/web/ChromeClientImpl.cpp

Index: third_party/WebKit/Source/web/ChromeClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/ChromeClientImpl.cpp b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
index f1a79c48decf2c7e988579b906f7d69e0832b063..29638d43dbcbfb59d35e6b354ee90c6c5c9996e8 100644
--- a/third_party/WebKit/Source/web/ChromeClientImpl.cpp
+++ b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
@@ -541,14 +541,6 @@ bool ChromeClientImpl::tabsToLinks() {
   return m_webView->tabsToLinks();
 }
 
-IntRect ChromeClientImpl::windowResizerRect(LocalFrame& frame) const {
-  return WebLocalFrameImpl::fromFrame(&frame)
-      ->localRoot()
-      ->frameWidget()
-      ->client()
-      ->windowResizerRect();
-}
-
 void ChromeClientImpl::invalidateRect(const IntRect& updateRect) {
   if (!updateRect.isEmpty())
     m_webView->invalidateRect(updateRect);