Remove RenderWidgetHostView*::DidUpdateBackingStore.

content/common/view_messages.h

Index: content/common/view_messages.h
diff --git a/content/common/view_messages.h b/content/common/view_messages.h
index 4c95bbeaad02db7b393749f0ef22d0495fec0867..008009d7ea494ff5486c63a8aab3ec0b8bacb091 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -393,28 +393,9 @@ IPC_STRUCT_BEGIN(ViewHostMsg_TextInputState_Params)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(ViewHostMsg_UpdateRect_Params)
-  // The bitmap to be painted into the view at the locations specified by
-  // update_rects.
-  IPC_STRUCT_MEMBER(TransportDIB::Id, bitmap)
-
-  // The position and size of the bitmap.
-  IPC_STRUCT_MEMBER(gfx::Rect, bitmap_rect)
-
-  // The scroll delta.  Only one of the delta components can be non-zero, and if
-  // they are both zero, then it means there is no scrolling and the scroll_rect
-  // is ignored.
-  IPC_STRUCT_MEMBER(gfx::Vector2d, scroll_delta)
-
-  // The rectangular region to scroll.
-  IPC_STRUCT_MEMBER(gfx::Rect, scroll_rect)
-
   // The scroll offset of the render view.
   IPC_STRUCT_MEMBER(gfx::Vector2d, scroll_offset)
 
-  // The regions of the bitmap (in view coords) that contain updated pixels.
-  // In the case of scrolling, this includes the scroll damage rect.
-  IPC_STRUCT_MEMBER(std::vector<gfx::Rect>, copy_rects)
-
   // The size of the RenderView when this message was generated.  This is
   // included so the host knows how large the view is from the perspective of
   // the renderer process.  This is necessary in case a resize operation is in
@@ -442,14 +423,6 @@ IPC_STRUCT_BEGIN(ViewHostMsg_UpdateRect_Params)
   // which would indicate that this paint message is an ACK for multiple
   // request messages.
   IPC_STRUCT_MEMBER(int, flags)
-
-  // All the above coordinates are in DIP. This is the scale factor needed
-  // to convert them to pixels.
-  IPC_STRUCT_MEMBER(float, scale_factor)
-
-  // The latency information for the frame. Only valid when accelerated
-  // compositing is disabled.
-  IPC_STRUCT_MEMBER(std::vector<ui::LatencyInfo>, latency_info)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(ViewMsg_New_Params)