Remove grow box rect support, renderer part.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index b4be9c3755e6ea17824202a93bbb7134de90eaea..060e15d0c0e4e4c1841bb08a4bdf340aea0b212f 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -513,7 +513,6 @@ bool RenderWidget::OnMessageReceived(const IPC::Message& message) {
                         OnEnableDeviceEmulation)
     IPC_MESSAGE_HANDLER(ViewMsg_DisableDeviceEmulation,
                         OnDisableDeviceEmulation)
-    IPC_MESSAGE_HANDLER(ViewMsg_ChangeResizeRect, OnChangeResizeRect)

[Nico, 2016/10/07 17:27:25]

Nothing ever sends this after the browser-side patch (the dependency)

     IPC_MESSAGE_HANDLER(ViewMsg_WasHidden, OnWasHidden)
     IPC_MESSAGE_HANDLER(ViewMsg_WasShown, OnWasShown)
     IPC_MESSAGE_HANDLER(ViewMsg_Repaint, OnRepaint)
@@ -564,7 +563,6 @@ void RenderWidget::SetWindowRectSynchronously(
   params.physical_backing_size =
       gfx::ScaleToCeiledSize(new_window_rect.size(), device_scale_factor_);
   params.visible_viewport_size = new_window_rect.size();
-  params.resizer_rect = gfx::Rect();
   params.is_fullscreen_granted = is_fullscreen_granted_;
   params.display_mode = display_mode_;
   params.needs_resize_ack = false;
@@ -630,7 +628,6 @@ void RenderWidget::OnEnableDeviceEmulation(
     resize_params.new_size = size_;
     resize_params.physical_backing_size = physical_backing_size_;
     resize_params.visible_viewport_size = visible_viewport_size_;
-    resize_params.resizer_rect = resizer_rect_;
     resize_params.is_fullscreen_granted = is_fullscreen_granted_;
     resize_params.display_mode = display_mode_;
     screen_metrics_emulator_.reset(new RenderWidgetScreenMetricsEmulator(
@@ -645,14 +642,6 @@ void RenderWidget::OnDisableDeviceEmulation() {
   screen_metrics_emulator_.reset();
 }
 
-void RenderWidget::OnChangeResizeRect(const gfx::Rect& resizer_rect) {
-  if (resizer_rect_ == resizer_rect)
-    return;
-  resizer_rect_ = resizer_rect;
-  if (GetWebWidget())
-    GetWebWidget()->didChangeWindowResizerRect();
-}
-
 void RenderWidget::OnWasHidden() {
   TRACE_EVENT0("renderer", "RenderWidget::OnWasHidden");
   // Go into a mode where we stop generating paint and scrolling events.
@@ -1071,7 +1060,6 @@ void RenderWidget::Resize(const ResizeParams& params) {
   }
 
   visible_viewport_size_ = params.visible_viewport_size;
-  resizer_rect_ = params.resizer_rect;
 
   // NOTE: We may have entered fullscreen mode without changing our size.
   bool fullscreen_change =
@@ -1418,10 +1406,6 @@ void RenderWidget::SetPendingWindowRect(const WebRect& rect) {
   }
 }
 
-WebRect RenderWidget::windowResizerRect() {
-  return resizer_rect_;
-}
-
 void RenderWidget::OnImeSetComposition(
     const base::string16& text,
     const std::vector<WebCompositionUnderline>& underlines,