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 4fe7c7ceced0d5f4d164ea14c548aca3aba0b1d6..276dd77c9d64f2dd941b9613839f1941a041d326 100644
--- a/gin/v8_platform.cc
+++ b/gin/v8_platform.cc
@@ -204,14 +204,14 @@ 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();
     }
   }