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

ui/base/ime/chromeos/component_extension_ime_manager.cc

Index: ui/base/ime/chromeos/component_extension_ime_manager.cc
diff --git a/ui/base/ime/chromeos/component_extension_ime_manager.cc b/ui/base/ime/chromeos/component_extension_ime_manager.cc
index 60ae074e378d5c682d1935b63fdd7bbf98a3df00..d77b6b1a56735a478a1c4cc92fb10700e3c8c706 100644
--- a/ui/base/ime/chromeos/component_extension_ime_manager.cc
+++ b/ui/base/ime/chromeos/component_extension_ime_manager.cc
@@ -93,12 +93,18 @@ bool InputMethodCompare(const input_method::InputMethodDescriptor& im1,
 ComponentExtensionEngine::ComponentExtensionEngine() {
 }
 
+ComponentExtensionEngine::ComponentExtensionEngine(
+    const ComponentExtensionEngine& other) = default;
+
 ComponentExtensionEngine::~ComponentExtensionEngine() {
 }
 
 ComponentExtensionIME::ComponentExtensionIME() {
 }
 
+ComponentExtensionIME::ComponentExtensionIME(
+    const ComponentExtensionIME& other) = default;
+
 ComponentExtensionIME::~ComponentExtensionIME() {
 }