chromeos: Add out-of-line copy ctors for complex classes.

chromeos/cryptohome/cryptohome_parameters.cc

Index: chromeos/cryptohome/cryptohome_parameters.cc
diff --git a/chromeos/cryptohome/cryptohome_parameters.cc b/chromeos/cryptohome/cryptohome_parameters.cc
index 5aa88578c0744dde5b0fbcce5a26e58763d45a56..dcb649eb30fbdfcbb57f4f93c5e89fa39ba0ad26 100644
--- a/chromeos/cryptohome/cryptohome_parameters.cc
+++ b/chromeos/cryptohome/cryptohome_parameters.cc
@@ -112,6 +112,8 @@ KeyDefinition::AuthorizationData::AuthorizationData(
                              false /* wrapped */));
 }
 
+KeyDefinition::AuthorizationData::AuthorizationData(
+    const AuthorizationData& other) = default;
 
 KeyDefinition::AuthorizationData::~AuthorizationData() {
 }
@@ -188,6 +190,8 @@ KeyDefinition::KeyDefinition(const std::string& secret,
       secret(secret) {
 }
 
+KeyDefinition::KeyDefinition(const KeyDefinition& other) = default;
+
 KeyDefinition::~KeyDefinition() {
 }
 
@@ -229,6 +233,8 @@ bool Authorization::operator==(const Authorization& other) const {
 MountParameters::MountParameters(bool ephemeral) : ephemeral(ephemeral) {
 }
 
+MountParameters::MountParameters(const MountParameters& other) = default;
+
 bool MountParameters::operator==(const MountParameters& other) const {
   return ephemeral == other.ephemeral && create_keys == other.create_keys;
 }