Linux: server side backing stores

chrome/browser/renderer_host/render_widget_host_view_mac.mm

Index: chrome/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/chrome/browser/renderer_host/render_widget_host_view_mac.mm b/chrome/browser/renderer_host/render_widget_host_view_mac.mm
index e651ddb51c9874ca5a190801ccede006eadb0884..bbb6a1315d9491500f70bc429d9ae46b432be9b8 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/chrome/browser/renderer_host/render_widget_host_view_mac.mm
@@ -208,6 +208,11 @@ void RenderWidgetHostViewMac::SetTooltipText(const std::wstring& tooltip_text) {
   }
 }
 
+BackingStore* RenderWidgetHostViewMac::AllocBackingStore(
+    const gfx::Size& size) {
+  return new BackingStore(size);
+}
+
 void RenderWidgetHostViewMac::ShutdownHost() {
   render_widget_host_->Shutdown();
   // Do not touch any members at this point, |this| has been deleted.