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

components/search_provider_logos/logo_common.cc

Index: components/search_provider_logos/logo_common.cc
diff --git a/components/search_provider_logos/logo_common.cc b/components/search_provider_logos/logo_common.cc
index f88cfdba7b4170e6de09e8c4fa2eb7987e9a1532..178f22bb7126832b8a45ea8c2472ca6ef311ba54 100644
--- a/components/search_provider_logos/logo_common.cc
+++ b/components/search_provider_logos/logo_common.cc
@@ -11,9 +11,11 @@ namespace search_provider_logos {
 const int64_t kMaxTimeToLiveMS = INT64_C(30 * 24 * 60 * 60 * 1000);  // 30 days
 
 LogoMetadata::LogoMetadata() : can_show_after_expiration(false) {}
+LogoMetadata::LogoMetadata(const LogoMetadata& other) = default;
 LogoMetadata::~LogoMetadata() {}
 
 EncodedLogo::EncodedLogo() {}
+EncodedLogo::EncodedLogo(const EncodedLogo& other) = default;
 EncodedLogo::~EncodedLogo() {}
 
 Logo::Logo() {}