GLImage::OnMemoryDump Stubs + Some Impls

ui/gl/gl_image_ref_counted_memory.cc

Index: ui/gl/gl_image_ref_counted_memory.cc
diff --git a/ui/gl/gl_image_ref_counted_memory.cc b/ui/gl/gl_image_ref_counted_memory.cc
index f01c7008a1d6f4c1ac32f0378944c07bfbaf9158..ee289754cbab404d4b6dd9e0b14cef79ca3e61d3 100644
--- a/ui/gl/gl_image_ref_counted_memory.cc
+++ b/ui/gl/gl_image_ref_counted_memory.cc
@@ -34,4 +34,18 @@ void GLImageRefCountedMemory::Destroy(bool 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