Cleanup Chrome's LevelDB env to conform to C++ style guidelines.

third_party/leveldatabase/chromium_logger.h

Index: third_party/leveldatabase/chromium_logger.h
diff --git a/third_party/leveldatabase/chromium_logger.h b/third_party/leveldatabase/chromium_logger.h
index 76862c35ff691de7a4a37c543b0e8bd860880a29..0e6391f7870c4f8d38c4854d59895802567e3cbb 100644
--- a/third_party/leveldatabase/chromium_logger.h
+++ b/third_party/leveldatabase/chromium_logger.h
@@ -5,23 +5,25 @@
 #ifndef THIRD_PARTY_LEVELDATABASE_CHROMIUM_LOGGER_H_
 #define THIRD_PARTY_LEVELDATABASE_CHROMIUM_LOGGER_H_
 
-#include <algorithm>
 #include <stdio.h>
+
+#include <algorithm>
+
 #include "base/format_macros.h"
 #include "base/strings/string_util.h"
 #include "base/time/time.h"
-#include "leveldb/env.h"
+#include "third_party/leveldatabase/src/include/leveldb/env.h"
 
 namespace leveldb {
 
 class ChromiumLogger : public Logger {
  public:
-  ChromiumLogger(FILE* f) : file_(f) { }
+  explicit ChromiumLogger(FILE* f) : file_(f) {}
   virtual ~ChromiumLogger() {
     fclose(file_);
   }
   virtual void Logv(const char* format, va_list ap) {
-    const long long unsigned int thread_id =
+    const base::PlatformThreadId thread_id =
         ::base::PlatformThread::CurrentId();
 
     // We try twice: the first time with a fixed-size stack allocated buffer,
@@ -85,6 +87,7 @@ class ChromiumLogger : public Logger {
       break;
     }
   }
+
  private:
   FILE* file_;
 };