Add initial GLImage tracing + stubs

ui/gl/gl_image_egl.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gl/gl_image_egl.h"
 
 #include "ui/gl/egl_util.h"
 #include "ui/gl/gl_surface_egl.h"
 
 namespace gfx {
@@ skipping 57 matching lines @@
 }
 
 bool GLImageEGL::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                                       int z_order,
                                       OverlayTransform transform,
                                       const Rect& bounds_rect,
                                       const RectF& crop_rect) {
   return false;
 }
 
+void GLImageEGL::DumpMemory(base::trace_event::ProcessMemoryDump* pmd,
+                            uint64_t process_tracing_id,
+                            const std::string& dump_name) {
+  // TODO(ericrk): Implement GLImage DumpMemory. crbug.com/514914
+}
+
 }  // namespace gfx