Adjust memory pressure from SSL

runtime/bin/secure_socket_boringssl.h

Index: runtime/bin/secure_socket_boringssl.h
diff --git a/runtime/bin/secure_socket_boringssl.h b/runtime/bin/secure_socket_boringssl.h
index a24194ab5b23f4ab2fa4fbbde90a5bdfaf59ef70..974a57ef8fe3c85f5c0eec6eee9ebc2a668eaaa3 100644
--- a/runtime/bin/secure_socket_boringssl.h
+++ b/runtime/bin/secure_socket_boringssl.h
@@ -35,6 +35,8 @@ extern unsigned int root_certificates_pem_length;
 
 class SSLContext {
  public:
+  static const intptr_t kApproximateSize;
+
   explicit SSLContext(SSL_CTX* context)
       : context_(context), alpn_protocol_string_(NULL) {}
 
@@ -81,6 +83,8 @@ class SSLFilter : public ReferenceCounted<SSLFilter> {
     kFirstEncrypted = kReadEncrypted
   };
 
+  static const intptr_t kApproximateSize;
+
   SSLFilter()
       : callback_error(NULL),
         ssl_(NULL),
@@ -133,6 +137,7 @@ class SSLFilter : public ReferenceCounted<SSLFilter> {
   BIO* socket_side_;
 
  private:
+  static const intptr_t kInternalBIOSize;
   static bool library_initialized_;
   static Mutex* mutex_;  // To protect library initialization.