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

content/renderer/pepper/plugin_instance_throttler_impl.cc

Index: content/renderer/pepper/plugin_instance_throttler_impl.cc
diff --git a/content/renderer/pepper/plugin_instance_throttler_impl.cc b/content/renderer/pepper/plugin_instance_throttler_impl.cc
index 1ff6248f3b349d75a7aa60f9b6b82bace08566e8..097480dea87200d6842e54595f41b7dbeba911f8 100644
--- a/content/renderer/pepper/plugin_instance_throttler_impl.cc
+++ b/content/renderer/pepper/plugin_instance_throttler_impl.cc
@@ -157,7 +157,7 @@ void PluginInstanceThrottlerImpl::OnImageFlush(const SkBitmap* bitmap) {
 
 bool PluginInstanceThrottlerImpl::ConsumeInputEvent(
     const blink::WebInputEvent& event) {
-  // Always allow right-clicks through so users may verify it's a plug-in.
+  // Always allow right-clicks through so users may verify it's a plugin.
   // TODO(tommycli): We should instead show a custom context menu (probably
   // using PluginPlaceholder) so users aren't confused and try to click the
   // Flash-internal 'Play' menu item. This is a stopgap solution.