Scroll offset pinning and content size notifications were only used for the Mac overlay navigation …

content/renderer/render_widget.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_widget.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 378 matching lines @@
       screen_info_(screen_info),
       device_scale_factor_(screen_info_.deviceScaleFactor),
       is_threaded_compositing_enabled_(false),
       current_event_latency_info_(NULL),
       next_output_surface_id_(0),
 #if defined(OS_ANDROID)
       text_field_is_dirty_(false),
       outstanding_ime_acks_(0),
       body_background_color_(SK_ColorWHITE),
 #endif
-#if defined(OS_MACOSX)
-      cached_has_main_frame_horizontal_scrollbar_(false),
-      cached_has_main_frame_vertical_scrollbar_(false),
-#endif
       popup_origin_scale_for_emulation_(0.f),
       resizing_mode_selector_(new ResizingModeSelector()),
       context_menu_source_type_(ui::MENU_SOURCE_MOUSE) {
   if (!swapped_out)
     RenderProcess::current()->AddRefProcess();
   DCHECK(RenderThread::Get());
   is_threaded_compositing_enabled_ =
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableThreadedCompositing);
 }
@@ skipping 1482 matching lines @@
     body_background_color_ = bg_color;
     Send(new ViewHostMsg_DidChangeBodyBackgroundColor(routing_id(), bg_color));
   }
 }
 #endif
 
 bool RenderWidget::CanComposeInline() {
   return true;
 }
 
-#if defined(OS_MACOSX)
-void RenderWidget::DidChangeScrollbarsForMainFrame(
-    bool has_horizontal_scrollbar,
-    bool has_vertical_scrollbar) {
-  if (has_horizontal_scrollbar != cached_has_main_frame_horizontal_scrollbar_ ||
-      has_vertical_scrollbar != cached_has_main_frame_vertical_scrollbar_) {
-    Send(new ViewHostMsg_DidChangeScrollbarsForMainFrame(
-          routing_id_, has_horizontal_scrollbar, has_vertical_scrollbar));
-
-    cached_has_main_frame_horizontal_scrollbar_ = has_horizontal_scrollbar;
-    cached_has_main_frame_vertical_scrollbar_ = has_vertical_scrollbar;
-  }
-}
-#endif  // defined(OS_MACOSX)
-
 WebScreenInfo RenderWidget::screenInfo() {
   return screen_info_;
 }
 
 float RenderWidget::deviceScaleFactor() {
   return device_scale_factor_;
 }
 
 void RenderWidget::resetInputMethod() {
   if (!input_method_is_active_)
@@ skipping 209 matching lines @@
 void RenderWidget::RegisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.RemoveObserver(frame);
 }
 #endif  // defined(VIDEO_HOLE)
 
 }  // namespace content