TryGetBackingStore 858 content/browser/renderer_host/render_widget_host_impl.cc if (TryGetBackingStore(view_size, &backing_store) || !force_create) TryGetBackingStore 890 content/browser/renderer_host/render_widget_host_impl.cc if (TryGetBackingStore(view_size, &backing_store) || TryGetBackingStore 910 content/browser/renderer_host/render_widget_host_impl.cc TryGetBackingStore(current_size_, &backing_store); TryGetBackingStore 262 content/browser/renderer_host/render_widget_host_impl.h bool TryGetBackingStore(const gfx::Size& desired_size,