Revert 122320 - fake_dns tool for Android.

tools/android/common/net.h

Index: tools/android/common/net.h
===================================================================
--- tools/android/common/net.h	(revision 122347)
+++ tools/android/common/net.h	(working copy)
@@ -6,8 +6,6 @@
 #define TOOLS_ANDROID_COMMON_NET_H_
 #pragma once
 
-#include <string>
-
 namespace tools {
 
 // DisableNagle can improve TCP transmission performance. Both Chrome net stack
@@ -17,9 +15,6 @@
 // Wake up listener only when data arrive.
 int DeferAccept(int socket);
 
-// Dumps a binary buffer into a string in a human-readable format.
-std::string DumpBinary(const char* buffer, size_t length);
-
 }  // namespace tools
 
 #endif  // TOOLS_ANDROID_COMMON_NET_H_