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

content/renderer/pepper/ppb_broker_impl.h

Index: content/renderer/pepper/ppb_broker_impl.h
diff --git a/content/renderer/pepper/ppb_broker_impl.h b/content/renderer/pepper/ppb_broker_impl.h
index 0f7485535d513c521fa3d4fd1635319d5f5d55f6..b43d3a6a371c1b0560f539e51d27456396bfe374 100644
--- a/content/renderer/pepper/ppb_broker_impl.h
+++ b/content/renderer/pepper/ppb_broker_impl.h
@@ -40,7 +40,7 @@ class PPB_Broker_Impl : public ppapi::Resource,
       scoped_refptr<ppapi::TrackedCallback> connect_callback) override;
   int32_t GetHandle(int32_t* handle) override;
 
-  // Returns the URL of the document this plug-in runs in. This is necessary to
+  // Returns the URL of the document this plugin runs in. This is necessary to
   // decide whether to grant access to the PPAPI broker.
   GURL GetDocumentUrl();