Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/base/host_port_pair.h

Index: net/base/host_port_pair.h
diff --git a/net/base/host_port_pair.h b/net/base/host_port_pair.h
index ebb2dd16406c4457c9ec0c584abcd9ecea763ea3..a5ee6bda3ff542624b484b7a11811b708fec3e11 100644
--- a/net/base/host_port_pair.h
+++ b/net/base/host_port_pair.h
@@ -34,9 +34,6 @@ class NET_EXPORT HostPortPair {
   // ToString().
   static HostPortPair FromString(const std::string& str);
 
-  // Returns the estimate of dynamically allocated memory in bytes.
-  static size_t EstimateMemoryUsage(const HostPortPair& pair);
-
   // TODO(willchan): Define a functor instead.
   // Comparator function so this can be placed in a std::map.
   bool operator<(const HostPortPair& other) const {
@@ -71,6 +68,9 @@ class NET_EXPORT HostPortPair {
   // Returns |host_|, adding IPv6 brackets if needed.
   std::string HostForURL() const;
 
+  // Returns the estimate of dynamically allocated memory in bytes.
+  size_t EstimateMemoryUsage() const;
+
  private:
   // If |host_| represents an IPv6 address, this string will not contain
   // brackets around the address.