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

content/browser/renderer_host/render_widget_host_view_aura.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/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/auto_reset.h"
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 1206 matching lines @@
     host->dispatcher()->ProcessedTouchEvent((*iter), window_, result);
   }
 }
 
 scoped_ptr<SyntheticGestureTarget>
 RenderWidgetHostViewAura::CreateSyntheticGestureTarget() {
   return scoped_ptr<SyntheticGestureTarget>(
       new SyntheticGestureTargetAura(host_));
 }
 
-void RenderWidgetHostViewAura::SetScrollOffsetPinning(
-    bool is_pinned_to_left, bool is_pinned_to_right) {
-  // Not needed. Mac-only.
-}
-
 InputEventAckState RenderWidgetHostViewAura::FilterInputEvent(
     const blink::WebInputEvent& input_event) {
   bool consumed = false;
   if (input_event.type == WebInputEvent::GestureFlingStart) {
     const WebGestureEvent& gesture_event =
         static_cast<const WebGestureEvent&>(input_event);
     // Zero-velocity touchpad flings are an Aura-specific signal that the
     // touchpad scroll has ended, and should not be forwarded to the renderer.
     if (gesture_event.sourceDevice == blink::WebGestureDeviceTouchpad &&
         !gesture_event.data.flingStart.velocityX &&
@@ skipping 1221 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewBase, public:
 
 // static
 void RenderWidgetHostViewBase::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content