Make File::Duplicate() const

content/browser/tracing/file_tracing_provider_impl.cc

Index: content/browser/tracing/file_tracing_provider_impl.cc
diff --git a/content/browser/tracing/file_tracing_provider_impl.cc b/content/browser/tracing/file_tracing_provider_impl.cc
index 7f63024942c8b704f574372762632de406d38cfb..b9dfa4e39bb404e95bec2924640d22225dd5790a 100644
--- a/content/browser/tracing/file_tracing_provider_impl.cc
+++ b/content/browser/tracing/file_tracing_provider_impl.cc
@@ -20,23 +20,26 @@ bool FileTracingProviderImpl::FileTracingCategoryIsEnabled() const {
   return enabled;
 }
 
-void FileTracingProviderImpl::FileTracingEnable(void* id) {
+void FileTracingProviderImpl::FileTracingEnable(const void* id) {
   TRACE_EVENT_NESTABLE_ASYNC_BEGIN0(
       kFileTracingEventCategoryGroup, FILE_TRACING_PREFIX, id);
 }
 
-void FileTracingProviderImpl::FileTracingDisable(void* id) {
+void FileTracingProviderImpl::FileTracingDisable(const void* id) {
   TRACE_EVENT_NESTABLE_ASYNC_END0(
       kFileTracingEventCategoryGroup, FILE_TRACING_PREFIX, id);
 }
 
-void FileTracingProviderImpl::FileTracingEventBegin(
-    const char* name, void* id, const base::FilePath& path, int64_t size) {
+void FileTracingProviderImpl::FileTracingEventBegin(const char* name,
+                                                    const void* id,
+                                                    const base::FilePath& path,
+                                                    int64_t size) {
   TRACE_EVENT_NESTABLE_ASYNC_BEGIN2(kFileTracingEventCategoryGroup, name, id,
       "path", path.AsUTF8Unsafe(), "size", size);
 }
 
-void FileTracingProviderImpl::FileTracingEventEnd(const char* name, void* id) {
+void FileTracingProviderImpl::FileTracingEventEnd(const char* name,
+                                                  const void* id) {
   TRACE_EVENT_NESTABLE_ASYNC_END0(kFileTracingEventCategoryGroup, name, id);
 }