Clean up unused constant globals

chrome/app/breakpad_linux.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.
 
 // For linux_syscall_support.h. This makes it safe to call embedded system
 // calls when in seccomp mode.
 
 #include "chrome/app/breakpad_linux.h"
 
 #include <fcntl.h>
@@ skipping 498 matching lines @@
   AddItem(file_data, file_size);
   Flush();
 }
 #endif
 
 void DumpProcess() {
   if (g_breakpad)
     g_breakpad->WriteMinidump();
 }
 
+#if defined(OS_ANDROID)
 const char kGoogleBreakpad[] = "google-breakpad";
+#endif
 
 size_t WriteLog(const char* buf, size_t nbytes) {
 #if defined(OS_ANDROID)
   return __android_log_write(ANDROID_LOG_WARN, kGoogleBreakpad, buf);
 #else
   return sys_write(2, buf, nbytes);
 #endif
 }
 
 #if defined(OS_ANDROID)
@@ skipping 970 matching lines @@
     } else {
       EnableNonBrowserCrashDumping(minidump_fd);
     }
   }
 }
 #endif  // OS_ANDROID
 
 bool IsCrashReporterEnabled() {
   return g_is_crash_reporter_enabled;
 }