Fix auto raw pointer deduction on linux

gin/v8_platform.cc

Index: gin/v8_platform.cc
diff --git a/gin/v8_platform.cc b/gin/v8_platform.cc
index 9c69aa97721e78c151e9c1e44866586d4e32006a..46de114898b476fe9ad2872dd86b38ead6b32556 100644
--- a/gin/v8_platform.cc
+++ b/gin/v8_platform.cc
@@ -201,14 +201,14 @@ class EnabledStateObserverImpl final
 
   void OnTraceLogEnabled() final {
     base::AutoLock lock(mutex_);
-    for (auto o : observers_) {
+    for (auto* o : observers_) {
       o->OnTraceEnabled();
     }
   }
 
   void OnTraceLogDisabled() final {
     base::AutoLock lock(mutex_);
-    for (auto o : observers_) {
+    for (auto* o : observers_) {
       o->OnTraceDisabled();
     }
   }