tools/gn: Change auto to not deduce raw pointers.

tools/gn/target.cc

 // Copyright (c) 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 "tools/gn/target.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 110 matching lines @@
 
   // Only check private deps if requested.
   if (check_private_deps) {
     for (const auto& pair : target->private_deps()) {
       if (EnsureFileIsGeneratedByDependency(pair.ptr, file, false,
                                             consider_object_files,
                                             check_data_deps, seen_targets))
         return true;  // Found a path.
     }
     if (target->output_type() == Target::CREATE_BUNDLE) {
-      for (const auto& dep : target->bundle_data().bundle_deps()) {
+      for (auto* dep : target->bundle_data().bundle_deps()) {
         if (EnsureFileIsGeneratedByDependency(dep, file, false,
                                               consider_object_files,
                                               check_data_deps, seen_targets))
           return true;  // Found a path.
       }
     }
   }
   return false;
 }
 
@@ skipping 375 matching lines @@
 
     // Don't propagate across toolchain.
     if (pair.ptr->toolchain() != toolchain())
       continue;
 
     // Direct dependency on a bundle_data target.
     if (pair.ptr->output_type() == BUNDLE_DATA)
       bundle_data_.AddBundleData(pair.ptr);
 
     // Recursive bundle_data informations from all dependencies.
-    for (const auto& target : pair.ptr->bundle_data().bundle_deps())
+    for (auto* target : pair.ptr->bundle_data().bundle_deps())
       bundle_data_.AddBundleData(target);
   }
 
   bundle_data_.OnTargetResolved(this);
 }
 
 void Target::FillOutputFiles() {
   const Tool* tool = toolchain_->GetToolForTargetFinalOutput(this);
   bool check_tool_outputs = false;
   switch (output_type_) {
@@ skipping 225 matching lines @@
     check_data_deps = g_scheduler->IsFileGeneratedByWriteRuntimeDeps(out_file);
     // Check object files (much slower and very rare) only if the "normal"
     // output check failed.
     consider_object_files = !check_data_deps;
     if (!EnsureFileIsGeneratedByDependency(this, out_file, true,
                                            consider_object_files,
                                            check_data_deps, &seen_targets))
       g_scheduler->AddUnknownGeneratedInput(this, source);
   }
 }