Make SSLClientSessionCache a client of memory coordinator

net/ssl/ssl_client_session_cache.cc

Index: net/ssl/ssl_client_session_cache.cc
diff --git a/net/ssl/ssl_client_session_cache.cc b/net/ssl/ssl_client_session_cache.cc
index 28a33da15ce6d64dc4d5dbca21faf87daf60d551..f1aa1d0e612a4a25fa3394acbe4b13fdefc473da 100644
--- a/net/ssl/ssl_client_session_cache.cc
+++ b/net/ssl/ssl_client_session_cache.cc
@@ -6,6 +6,7 @@
 
 #include <utility>
 
+#include "base/memory/memory_coordinator_client_registry.h"
 #include "base/time/clock.h"
 #include "base/time/default_clock.h"
 
@@ -18,10 +19,12 @@ SSLClientSessionCache::SSLClientSessionCache(const Config& config)
       lookups_since_flush_(0) {
   memory_pressure_listener_.reset(new base::MemoryPressureListener(base::Bind(
       &SSLClientSessionCache::OnMemoryPressure, base::Unretained(this))));
+  base::MemoryCoordinatorClientRegistry::GetInstance()->Register(this);
 }
 
 SSLClientSessionCache::~SSLClientSessionCache() {
   Flush();
+  base::MemoryCoordinatorClientRegistry::GetInstance()->Unregister(this);
 }
 
 size_t SSLClientSessionCache::size() const {
@@ -112,4 +115,22 @@ void SSLClientSessionCache::OnMemoryPressure(
   }
 }
 
+void SSLClientSessionCache::OnMemoryStateChange(base::MemoryState state) {
+  // TODO(hajimehoshi): When the state changes, adjust the sizes of the caches
+  // to reduce the limits. SSLClientSessionCache doesn't have the ability to
+  // limit at present.
+  switch (state) {
+    case base::MemoryState::NORMAL:
+      break;
+    case base::MemoryState::THROTTLED:
+      Flush();
+      break;
+    case base::MemoryState::SUSPENDED:
+    // Note: Not supported at present. Fall through.
+    case base::MemoryState::UNKNOWN:
+      NOTREACHED();
+      break;
+  }
+}
+
 }  // namespace net