[WIP] Add SharedMemoryTracker to dump base::SharedMemory usage

content/child/child_shared_bitmap_manager.cc

Index: content/child/child_shared_bitmap_manager.cc
diff --git a/content/child/child_shared_bitmap_manager.cc b/content/child/child_shared_bitmap_manager.cc
index 225c569b7690239f243bad5f6ca5c7707a044817..ecad4c78a83b0768fe1e12d43b3e1a5ed320795f 100644
--- a/content/child/child_shared_bitmap_manager.cc
+++ b/content/child/child_shared_bitmap_manager.cc
@@ -29,7 +29,9 @@ class ChildSharedBitmap : public cc::SharedBitmap {
           render_message_filter_ptr,
       base::SharedMemory* shared_memory,
       const cc::SharedBitmapId& id)
-      : cc::SharedBitmap(static_cast<uint8_t*>(shared_memory->memory()), id),
+      : cc::SharedBitmap(static_cast<uint8_t*>(shared_memory->memory()),
+                         shared_memory,
+                         id),
         render_message_filter_ptr_(render_message_filter_ptr) {}
 
   ChildSharedBitmap(