cc: Make OutputSurface::Reshape abstract

services/ui/surfaces/direct_output_surface.cc

Index: services/ui/surfaces/direct_output_surface.cc
diff --git a/services/ui/surfaces/direct_output_surface.cc b/services/ui/surfaces/direct_output_surface.cc
index bd07cd00c6dd4185951daee6ad5b7d98dc5ab718..67cd6591609c1b5165f5da431bc5a385efdff131 100644
--- a/services/ui/surfaces/direct_output_surface.cc
+++ b/services/ui/surfaces/direct_output_surface.cc
@@ -49,6 +49,14 @@ void DirectOutputSurface::BindFramebuffer() {
   context_provider()->ContextGL()->BindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
+void DirectOutputSurface::Reshape(const gfx::Size& size,
+                                  float device_scale_factor,
+                                  const gfx::ColorSpace& color_space,
+                                  bool has_alpha) {
+  context_provider()->ContextGL()->ResizeCHROMIUM(
+      size.width(), size.height(), device_scale_factor, has_alpha);
+}
+
 void DirectOutputSurface::SwapBuffers(cc::OutputSurfaceFrame frame) {
   DCHECK(context_provider_);
   if (frame.sub_buffer_rect == gfx::Rect(frame.size)) {