Eliminate build warnings in base/ for Android x64

base/debug/stack_trace_android.cc

 // Copyright (c) 2012 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 "base/debug/stack_trace.h"
 
 #include <android/log.h>
 #include <unwind.h>
 
 #include "base/debug/proc_maps_linux.h"
@@ skipping 86 matching lines @@
 
     std::vector<MappedMemoryRegion>::iterator iter = regions.begin();
     while (iter != regions.end()) {
       if (address >= iter->start && address < iter->end &&
           !iter->path.empty()) {
         break;
       }
       ++iter;
     }
 
-    *os << base::StringPrintf("#%02d 0x%08x ", i, address);
+#ifdef __LP64__

[bulach, 2014/03/03 09:15:41]

nit: similarly to the previous file, please move this up, in between #include
and the namespace declaration in line 13.

+#define FMT_ADDR  "0x%016lx"
+#else
+#define FMT_ADDR  "0x%08x"
+#endif
+    *os << base::StringPrintf("#%02zd " FMT_ADDR " ", i, address);
 
     if (iter != regions.end()) {
       uintptr_t rel_pc = address - iter->start + iter->offset;
       const char* path = iter->path.c_str();
-      *os << base::StringPrintf("%s+0x%08x", path, rel_pc);
+      *os << base::StringPrintf("%s+" FMT_ADDR, path, rel_pc);
     } else {
       *os << "<unknown>";
     }
 
     *os << "\n";
   }
 }
 
 }  // namespace debug
 }  // namespace base