Eliminate implicit conversion from scoped_refptr<T> to T*

content/browser/device_orientation/message_filter.cc

Index: content/browser/device_orientation/message_filter.cc
diff --git a/content/browser/device_orientation/message_filter.cc b/content/browser/device_orientation/message_filter.cc
index 9418c69dde5724660b2e3d3e45aa255d1d7c6490..81c871bc5cd3107b8c86cb65763cb30745e3ea7a 100644
--- a/content/browser/device_orientation/message_filter.cc
+++ b/content/browser/device_orientation/message_filter.cc
@@ -27,7 +27,7 @@ class MessageFilter::ObserverDelegate
     // Create ObserverDelegate that observes provider and forwards updates to
     // render_view_id in process_id.
     // Will stop observing provider when destructed.
-    ObserverDelegate(Provider* provider,
+    ObserverDelegate(const scoped_refptr<Provider>& provider,
                      int render_view_id,
                      IPC::Message::Sender* sender);
 
@@ -45,9 +45,10 @@ class MessageFilter::ObserverDelegate
   DISALLOW_COPY_AND_ASSIGN(ObserverDelegate);
 };
 
-MessageFilter::ObserverDelegate::ObserverDelegate(Provider* provider,
-                                                  int render_view_id,
-                                                  IPC::Message::Sender* sender)
+MessageFilter::ObserverDelegate::ObserverDelegate(
+    const scoped_refptr<Provider>& provider,
+    int render_view_id,
+    IPC::Message::Sender* sender)
     : provider_(provider),
       render_view_id_(render_view_id),
       sender_(sender) {