HSTS: add net-internals UI.

net/base/transport_security_state.cc

Index: net/base/transport_security_state.cc
diff --git a/net/base/transport_security_state.cc b/net/base/transport_security_state.cc
index aed714caafb8f10880947802fef863bb0b2daba6..b7ac9f0a7a50bfff5d59927eccd0def3d00fc09c 100644
--- a/net/base/transport_security_state.cc
+++ b/net/base/transport_security_state.cc
@@ -45,10 +45,32 @@ void TransportSecurityState::EnableHost(const std::string& host,
   if (IsEnabledForHost(&existing_state, host))
     state_copy.created = existing_state.created;
 
+  // We don't store these values.
+  state_copy.preloaded = false;
+  state_copy.domain.clear();
+
   enabled_hosts_[std::string(hashed, sizeof(hashed))] = state_copy;
   DirtyNotify();
 }
 
+bool TransportSecurityState::DeleteHost(const std::string& host) {
+  const std::string canonicalised_host = CanonicaliseHost(host);
+  if (canonicalised_host.empty())
+    return false;
+
+  char hashed[base::SHA256_LENGTH];
+  base::SHA256HashString(canonicalised_host, hashed, sizeof(hashed));
+
+  std::map<std::string, DomainState>::iterator i = enabled_hosts_.find(
+      std::string(hashed, sizeof(hashed)));
+  if (i != enabled_hosts_.end()) {
+    enabled_hosts_.erase(i);
+    DirtyNotify();
+    return true;
+  }
+  return false;
+}
+
 // IncludeNUL converts a char* to a std::string and includes the terminating
 // NUL in the result.
 static std::string IncludeNUL(const char* in) {
@@ -66,9 +88,11 @@ bool TransportSecurityState::IsEnabledForHost(DomainState* result,
     result->created = result->expiry = base::Time::FromTimeT(0);
     result->mode = DomainState::MODE_STRICT;
     result->include_subdomains = include_subdomains;
+    result->preloaded = true;
     return true;
   }
 
+  result->preloaded = false;
   base::Time current_time(base::Time::Now());
 
   for (size_t i = 0; canonicalised_host[i]; i += canonicalised_host[i] + 1) {
@@ -88,6 +112,7 @@ bool TransportSecurityState::IsEnabledForHost(DomainState* result,
     }
 
     *result = j->second;
+    result->domain = DNSDomainToString(&canonicalised_host[i]);
 
     // If we matched the domain exactly, it doesn't matter what the value of
     // include_subdomains is.