GLImage::OnMemoryDump Stubs + Some Impls

ui/gl/gl_image_ref_counted_memory.cc

 // Copyright 2014 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_ref_counted_memory.h"
 
 #include "base/logging.h"
 #include "base/memory/ref_counted_memory.h"
 
 namespace gfx {
@@ skipping 16 matching lines @@
   DCHECK(!ref_counted_memory_.get());
   ref_counted_memory_ = ref_counted_memory;
   return true;
 }
 
 void GLImageRefCountedMemory::Destroy(bool have_context) {
   GLImageMemory::Destroy(have_context);
   ref_counted_memory_ = NULL;
 }
 
+void GLImageRefCountedMemory::OnMemoryDump(
+    base::trace_event::ProcessMemoryDump* pmd,
+    uint64_t process_tracing_id,
+    const std::string& dump_name) {
+  // Log size 0 if |ref_counted_memory_| has been released.
+  size_t size_in_bytes = ref_counted_memory_ ? ref_counted_memory_->size() : 0;
+
+  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_in_bytes));
+}
+
 }  // namespace gfx