Plugin Power Saver: Replace all "plug-in" with "plugin" for consistency.

content/browser/plugin_data_remover_impl.h

Index: content/browser/plugin_data_remover_impl.h
diff --git a/content/browser/plugin_data_remover_impl.h b/content/browser/plugin_data_remover_impl.h
index 704ebaaa6377c6f5783543a7446910728286cdab..ed2b7ea3163d7dace619db9c96ca8803dda61a45 100644
--- a/content/browser/plugin_data_remover_impl.h
+++ b/content/browser/plugin_data_remover_impl.h
@@ -22,9 +22,9 @@ class CONTENT_EXPORT PluginDataRemoverImpl : public PluginDataRemover {
   // PluginDataRemover implementation:
   base::WaitableEvent* StartRemoving(base::Time begin_time) override;
 
-  // The plug-in whose data should be removed (usually Flash) is specified via
+  // The plugin whose data should be removed (usually Flash) is specified via
   // its MIME type. This method sets a different MIME type in order to call a
-  // different plug-in (for example in tests).
+  // different plugin (for example in tests).
   void set_mime_type(const std::string& mime_type) { mime_type_ = mime_type; }
 
  private: