Fix classes that have too many virtuals for inline constructors.

chrome/browser/pepper_flash_settings_manager.h

Index: chrome/browser/pepper_flash_settings_manager.h
diff --git a/chrome/browser/pepper_flash_settings_manager.h b/chrome/browser/pepper_flash_settings_manager.h
index ee92fc588d2035d65e7ba5b4b5fcbe0b3a76fe07..35364772dbf7c0f9590a0f5eb51ba6b2c6cc0f57 100644
--- a/chrome/browser/pepper_flash_settings_manager.h
+++ b/chrome/browser/pepper_flash_settings_manager.h
@@ -50,6 +50,9 @@ class PepperFlashSettingsManager {
         const std::vector<std::string>& sites) {}
 
     virtual void OnClearSiteDataCompleted(uint32 request_id, bool success) {}
+
+   protected:
+    Client() = default;
   };
 
   // |client| must outlive this object. It is guaranteed that |client| won't