Implement a skeleton version of Expect CT reports

chrome/browser/profiles/profile_io_data.h

Index: chrome/browser/profiles/profile_io_data.h
diff --git a/chrome/browser/profiles/profile_io_data.h b/chrome/browser/profiles/profile_io_data.h
index 3413ab7bd9627dd200187290d9c9f6d36da83f80..4ea6c5dd9bc7139ac0424cb86dbfc0cc222ad289 100644
--- a/chrome/browser/profiles/profile_io_data.h
+++ b/chrome/browser/profiles/profile_io_data.h
@@ -39,6 +39,7 @@
 class ChromeHttpUserAgentSettings;
 class ChromeNetworkDelegate;
 class ChromeURLRequestContextGetter;
+class ChromeExpectCTReporter;
 class HostContentSettingsMap;
 class MediaDeviceIDSalt;
 class ProtocolHandlerRegistry;
@@ -545,6 +546,7 @@ class ProfileIOData {
   mutable scoped_ptr<net::ProxyService> proxy_service_;
   mutable scoped_ptr<net::TransportSecurityState> transport_security_state_;
   mutable scoped_ptr<net::CTVerifier> cert_transparency_verifier_;
+  mutable scoped_ptr<ChromeExpectCTReporter> expect_ct_reporter_;
   mutable scoped_ptr<net::HttpServerProperties>
       http_server_properties_;
 #if defined(OS_CHROMEOS)