Remove implicit conversions from scoped_refptr to T* in chrome/browser/apps/

chrome/browser/apps/ephemeral_app_service.cc

Index: chrome/browser/apps/ephemeral_app_service.cc
diff --git a/chrome/browser/apps/ephemeral_app_service.cc b/chrome/browser/apps/ephemeral_app_service.cc
index f23cc9085e64534363c3ff47f1a0685cd95cff41..36c8cdab4a9c7bc7da5201c26f34d09d6533985e 100644
--- a/chrome/browser/apps/ephemeral_app_service.cc
+++ b/chrome/browser/apps/ephemeral_app_service.cc
@@ -212,7 +212,7 @@ void EphemeralAppService::InitEphemeralAppCount() {
   ephemeral_app_count_ = 0;
   for (ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end(); ++it) {
-    const Extension* extension = *it;
+    const Extension* extension = it->get();
     if (prefs->IsEphemeralApp(extension->id()))
       ++ephemeral_app_count_;
   }
@@ -247,7 +247,7 @@ void EphemeralAppService::DisableEphemeralAppsOnStartup() {
   for (ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end();
        ++it) {
-    const Extension* extension = *it;
+    const Extension* extension = it->get();
     if (!prefs->IsEphemeralApp(extension->id()))
       continue;
 
@@ -314,7 +314,7 @@ void EphemeralAppService::GarbageCollectApps() {
   // Populate a list of ephemeral apps, ordered by their last launch time.
   for (ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end(); ++it) {
-    const Extension* extension = *it;
+    const Extension* extension = it->get();
     if (!prefs->IsEphemeralApp(extension->id()))
       continue;