Instrument SpdySessionPool using MemoryDumpProvider

net/spdy/spdy_session.h

Index: net/spdy/spdy_session.h
diff --git a/net/spdy/spdy_session.h b/net/spdy/spdy_session.h
index 755a1ef187528cac48b60fedaf0c7f9f3c4bece1..e4d79761df2854bd0082fd3fe092f9908a65b52d 100644
--- a/net/spdy/spdy_session.h
+++ b/net/spdy/spdy_session.h
@@ -46,6 +46,12 @@
 #include "url/gurl.h"
 #include "url/scheme_host_port.h"
 
+namespace base {
+namespace trace_event {
+class ProcessMemoryDump;
+}
+}
+
 namespace net {
 
 namespace test {
@@ -565,6 +571,11 @@ class NET_EXPORT SpdySession : public BufferedSpdyFramerVisitorInterface,
   // HigherLayeredPool implementation:
   bool CloseOneIdleConnection() override;
 
+  // Dumps memory allocation stats. |parent_dump_absolute_name| is the name
+  // used by the parent MemoryAllocatorDump in the memory dump hierarchy.
+  void DumpMemoryStats(base::trace_event::ProcessMemoryDump* pmd,
+                       const std::string& parent_dump_absolute_name) const;
+
  private:
   friend class test::SpdyStreamTest;
   friend class base::RefCounted<SpdySession>;