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

components/omnibox/browser/autocomplete_input.h

Index: components/omnibox/browser/autocomplete_input.h
diff --git a/components/omnibox/browser/autocomplete_input.h b/components/omnibox/browser/autocomplete_input.h
index 38a431c3f3a3c7aae19e39b1c10117462ef0a3c1..1c047065d40e5992fdb660825e5c590e97ae5963 100644
--- a/components/omnibox/browser/autocomplete_input.h
+++ b/components/omnibox/browser/autocomplete_input.h
@@ -80,6 +80,7 @@ class AutocompleteInput {
                     bool want_asynchronous_matches,
                     bool from_omnibox_focus,
                     const AutocompleteSchemeClassifier& scheme_classifier);
+  AutocompleteInput(const AutocompleteInput& other);
   ~AutocompleteInput();
 
   // If type is |FORCED_QUERY| and |text| starts with '?', it is removed.