Remove stl_util's deletion function use from content/.

content/browser/download/mhtml_generation_manager.h

Index: content/browser/download/mhtml_generation_manager.h
diff --git a/content/browser/download/mhtml_generation_manager.h b/content/browser/download/mhtml_generation_manager.h
index 31d9a64df624431324431721353b62e1eb2956a1..597350222547e6e561982c26ac75415ae9fd7093 100644
--- a/content/browser/download/mhtml_generation_manager.h
+++ b/content/browser/download/mhtml_generation_manager.h
@@ -7,6 +7,7 @@
 #include <stdint.h>
 
 #include <map>
+#include <memory>
 #include <set>
 #include <string>
 
@@ -88,8 +89,7 @@ class MHTMLGenerationManager {
   // Called when the render process connected to a job exits.
   void RenderProcessExited(Job* job);
 
-  typedef std::map<int, Job*> IDToJobMap;
-  IDToJobMap id_to_job_;
+  std::map<int, std::unique_ptr<Job>> id_to_job_;
 
   int next_job_id_;