Fix auto raw pointer deduction on linux

extensions/browser/api/system_display/system_display_api.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/api/system_display/system_display_api.h"
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 124 matching lines @@
 
 OverscanTracker::OverscanWebObserver* OverscanTracker::GetObserver(
     content::WebContents* web_contents,
     bool create) {
   ObserverMap::iterator iter = observers_.find(web_contents);
   if (iter != observers_.end())
     return iter->second.get();
   if (!create)
     return nullptr;
   auto owned_observer = base::MakeUnique<OverscanWebObserver>(web_contents);
-  auto observer_ptr = owned_observer.get();
+  auto* observer_ptr = owned_observer.get();
   observers_[web_contents] = std::move(owned_observer);
   return observer_ptr;
 }
 
 bool OverscanTracker::RemoveObserverImpl(content::WebContents* web_contents) {
   observers_.erase(web_contents);
   return observers_.empty();
 }
 
 }  // namespace
@@ skipping 180 matching lines @@
   std::string error;
   if (DisplayInfoProvider::Get()->IsNativeTouchCalibrationActive(&error))
     return RespondNow(Error(error));
 
   if (!DisplayInfoProvider::Get()->ClearTouchCalibration(params->id, &error))
     return RespondNow(Error(error));
   return RespondNow(NoArguments());
 }
 
 }  // namespace extensions