Remove ViewHostMsg_DidChangeScrollOffset

This message has a very high frequency (top 15 IPCs), but is only used on Aura.
As its effect, disabling mouse events when the cursor is hidden, can be achieved
by other means, remove the message.

BUG=404656

Review URL: https://codereview.chromium.org/481983002

Cr-Commit-Position: refs/heads/master@{#290610}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@290610 0039d316-1c4b-4281-b951-d872f2087c98

11 files changed, 0 insertions, 34 deletions

diff --git a/content/browser/frame_host/render_widget_host_view_child_frame.cc b/content/browser/frame_host/render_widget_host_view_child_frame.cc
index 94e7e13..580c6c5 100644
--- a/content/browser/frame_host/render_widget_host_view_child_frame.cc
+++ b/content/browser/frame_host/render_widget_host_view_child_frame.cc
@@ -195,9 +195,6 @@ void RenderWidgetHostViewChildFrame::UnlockCompositingSurface() {
 }
 #endif
 
-void RenderWidgetHostViewChildFrame::ScrollOffsetChanged() {
-}
-
 void RenderWidgetHostViewChildFrame::AcceleratedSurfaceInitialized(int host_id,
                                                               int route_id) {
 }
diff --git a/content/browser/frame_host/render_widget_host_view_child_frame.h b/content/browser/frame_host/render_widget_host_view_child_frame.h
index 07e8428..26b6535 100644
--- a/content/browser/frame_host/render_widget_host_view_child_frame.h
+++ b/content/browser/frame_host/render_widget_host_view_child_frame.h
@@ -84,7 +84,6 @@ class CONTENT_EXPORT RenderWidgetHostViewChildFrame
                                 const gfx::Range& range) OVERRIDE;
   virtual void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) OVERRIDE;
-  virtual void ScrollOffsetChanged() OVERRIDE;
   virtual void CopyFromCompositingSurface(
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index bb4b9fd..d5dc4299 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -922,8 +922,6 @@ bool RenderViewHostImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(ViewHostMsg_ToggleFullscreen, OnToggleFullscreen)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidContentsPreferredSizeChange,
                         OnDidContentsPreferredSizeChange)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_DidChangeScrollOffset,
-                        OnDidChangeScrollOffset)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RouteCloseEvent,
                         OnRouteCloseEvent)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RouteMessageEvent, OnRouteMessageEvent)
@@ -1147,11 +1145,6 @@ void RenderViewHostImpl::OnRenderAutoResized(const gfx::Size& new_size) {
   delegate_->ResizeDueToAutoResize(new_size);
 }
 
-void RenderViewHostImpl::OnDidChangeScrollOffset() {
-  if (view_)
-    view_->ScrollOffsetChanged();
-}
-
 void RenderViewHostImpl::OnRouteCloseEvent() {
   // Have the delegate route this to the active RenderViewHost.
   delegate_->RouteCloseEvent(this);
diff --git a/content/browser/renderer_host/render_view_host_impl.h b/content/browser/renderer_host/render_view_host_impl.h
index fa76384..445a0dc 100644
--- a/content/browser/renderer_host/render_view_host_impl.h
+++ b/content/browser/renderer_host/render_view_host_impl.h
@@ -435,7 +435,6 @@ class CONTENT_EXPORT RenderViewHostImpl
   void OnDocumentAvailableInMainFrame(bool uses_temporary_zoom_level);
   void OnToggleFullscreen(bool enter_fullscreen);
   void OnDidContentsPreferredSizeChange(const gfx::Size& new_size);
-  void OnDidChangeScrollOffset();
   void OnPasteFromSelectionClipboard();
   void OnRouteCloseEvent();
   void OnRouteMessageEvent(const ViewMsg_PostMessage_Params& params);
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 331cf08..3a1f9fe 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -772,9 +772,6 @@ void RenderWidgetHostViewAndroid::SelectionBoundsChanged(
                                                   true);
 }
 
-void RenderWidgetHostViewAndroid::ScrollOffsetChanged() {
-}
-
 void RenderWidgetHostViewAndroid::SetBackgroundOpaque(bool opaque) {
   RenderWidgetHostViewBase::SetBackgroundOpaque(opaque);
   host_->SetBackgroundOpaque(opaque);
diff --git a/content/browser/renderer_host/render_widget_host_view_android.h b/content/browser/renderer_host/render_widget_host_view_android.h
index 7601adc..8b35e95 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.h
+++ b/content/browser/renderer_host/render_widget_host_view_android.h
@@ -117,7 +117,6 @@ class CONTENT_EXPORT RenderWidgetHostViewAndroid
                                 const gfx::Range& range) OVERRIDE;
   virtual void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) OVERRIDE;
-  virtual void ScrollOffsetChanged() OVERRIDE;
   virtual void AcceleratedSurfaceInitialized(int host_id,
                                              int route_id) OVERRIDE;
   virtual void AcceleratedSurfaceBuffersSwapped(
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index 0d41c2a..92c9ef4 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -934,16 +934,6 @@ void RenderWidgetHostViewAura::SelectionBoundsChanged(
   }
 }
 
-void RenderWidgetHostViewAura::ScrollOffsetChanged() {
-  aura::Window* root = window_->GetRootWindow();
-  if (!root)
-    return;
-  aura::client::CursorClient* cursor_client =
-      aura::client::GetCursorClient(root);
-  if (cursor_client && !cursor_client->IsCursorVisible())
-    cursor_client->DisableMouseEvents();
-}
-
 void RenderWidgetHostViewAura::CopyFromCompositingSurface(
     const gfx::Rect& src_subrect,
     const gfx::Size& dst_size,
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index c418b50..565c569 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -178,7 +178,6 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   virtual gfx::Size GetRequestedRendererSize() const OVERRIDE;
   virtual void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) OVERRIDE;
-  virtual void ScrollOffsetChanged() OVERRIDE;
   virtual void CopyFromCompositingSurface(
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
diff --git a/content/browser/renderer_host/render_widget_host_view_base.h b/content/browser/renderer_host/render_widget_host_view_base.h
index 7dd8676..dc3613e 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.h
+++ b/content/browser/renderer_host/render_widget_host_view_base.h
@@ -240,9 +240,6 @@ class CONTENT_EXPORT RenderWidgetHostViewBase : public RenderWidgetHostView,
   virtual void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) = 0;
 
-  // Notifies the view that the scroll offset has changed.
-  virtual void ScrollOffsetChanged() = 0;
-
   // Copies the contents of the compositing surface, providing a new SkBitmap
   // result via an asynchronously-run |callback|. |src_subrect| is specified in
   // layer space coordinates for the current platform (e.g., DIP for Aura/Mac,
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.h b/content/browser/renderer_host/render_widget_host_view_mac.h
index f0bfe1b..a376f77 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.h
+++ b/content/browser/renderer_host/render_widget_host_view_mac.h
@@ -280,7 +280,6 @@ class CONTENT_EXPORT RenderWidgetHostViewMac
                                 const gfx::Range& range) OVERRIDE;
   virtual void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) OVERRIDE;
-  virtual void ScrollOffsetChanged() OVERRIDE;
   virtual void CopyFromCompositingSurface(
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index 0b47e64..5f44897 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -1072,9 +1072,6 @@ void RenderWidgetHostViewMac::SelectionBoundsChanged(
     caret_rect_ = params.anchor_rect;
 }
 
-void RenderWidgetHostViewMac::ScrollOffsetChanged() {
-}
-
 void RenderWidgetHostViewMac::SetShowingContextMenu(bool showing) {
   RenderWidgetHostViewBase::SetShowingContextMenu(showing);