GLImage::OnMemoryDump Stubs + Some Impls

ui/gl/gl_image_io_surface.mm

 // Copyright 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_io_surface.h"
 
 #include <map>
 
 #include "base/lazy_instance.h"
 #include "base/mac/foundation_util.h"
@@ skipping 109 matching lines @@
       NOTREACHED();
       return 0;
   }
 
   NOTREACHED();
   return 0;
 }
 
 }  // namespace
 
-GLImageIOSurface::GLImageIOSurface(const gfx::Size& size,
+GLImageIOSurface::GLImageIOSurface(gfx::GenericSharedMemoryId io_surface_id,
+                                   const gfx::Size& size,
                                    unsigned internalformat)
-    : size_(size),
+    : io_surface_id_(io_surface_id),
+      size_(size),
       internalformat_(internalformat),
       format_(BufferFormat::RGBA_8888) {}
 
 GLImageIOSurface::~GLImageIOSurface() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(!io_surface_);
 }
 
 bool GLImageIOSurface::Initialize(IOSurfaceRef io_surface,
                                   BufferFormat format) {
@@ skipping 61 matching lines @@
                                             const Rect& bounds_rect,
                                             const RectF& crop_rect) {
   NOTREACHED();
   return false;
 }
 
 base::ScopedCFTypeRef<IOSurfaceRef> GLImageIOSurface::io_surface() {
   return io_surface_;
 }
 
+void GLImageIOSurface::OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd,
+                                    uint64_t process_tracing_id,
+                                    const std::string& dump_name) {
+  size_t size_bytes = IOSurfaceGetAllocSize(io_surface_);
+
+  base::trace_event::MemoryAllocatorDump* dump =
+      pmd->CreateAllocatorDump(dump_name);
+  dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
+                  base::trace_event::MemoryAllocatorDump::kUnitsBytes,
+                  static_cast<uint64_t>(size_bytes));
+
+  auto guid = gfx::GetGenericSharedMemoryGUIDForTracing(process_tracing_id,
+                                                        io_surface_id_);
+  pmd->CreateSharedGlobalAllocatorDump(guid);
+  pmd->AddOwnershipEdge(dump->guid(), guid);
+}
+
 // static
 void GLImageIOSurface::SetLayerForWidget(
     gfx::AcceleratedWidget widget, CALayer* layer) {
   if (layer)
     g_widget_to_layer_map.Pointer()->insert(std::make_pair(widget, layer));
   else
     g_widget_to_layer_map.Pointer()->erase(widget);
 }
 
 }  // namespace gfx