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

chrome/browser/ui/content_settings/content_setting_bubble_model.cc

Index: chrome/browser/ui/content_settings/content_setting_bubble_model.cc
diff --git a/chrome/browser/ui/content_settings/content_setting_bubble_model.cc b/chrome/browser/ui/content_settings/content_setting_bubble_model.cc
index 48129601c2c9df42b1eefd4f202dc88d2a4b1e7d..ea733f854bbf2e22df3a177e69abb1f1cf5968f5 100644
--- a/chrome/browser/ui/content_settings/content_setting_bubble_model.cc
+++ b/chrome/browser/ui/content_settings/content_setting_bubble_model.cc
@@ -1289,10 +1289,16 @@ ContentSettingBubbleModel::RadioGroup::~RadioGroup() {}
 
 ContentSettingBubbleModel::DomainList::DomainList() {}
 
+ContentSettingBubbleModel::DomainList::DomainList(const DomainList& other) =
+    default;
+
 ContentSettingBubbleModel::DomainList::~DomainList() {}
 
 ContentSettingBubbleModel::MediaMenu::MediaMenu() : disabled(false) {}
 
+ContentSettingBubbleModel::MediaMenu::MediaMenu(const MediaMenu& other) =
+    default;
+
 ContentSettingBubbleModel::MediaMenu::~MediaMenu() {}
 
 ContentSettingBubbleModel::BubbleContent::BubbleContent()