Replace the asan_coverage GYP flag with sanitizer_coverage which is to be used with other sanitizer…

content/common/sandbox_linux/sandbox_linux.h

 // 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.
 
 #ifndef CONTENT_COMMON_SANDBOX_LINUX_SANDBOX_LINUX_H_
 #define CONTENT_COMMON_SANDBOX_LINUX_SANDBOX_LINUX_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/common/sandbox_linux.h"
 
 #if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || \
     defined(THREAD_SANITIZER) || defined(LEAK_SANITIZER) || \
-    defined(UNDEFINED_SANITIZER)
+    defined(UNDEFINED_SANITIZER) || defined(SANITIZER_COVERAGE)
 #include <sanitizer/common_interface_defs.h>
 #define ANY_OF_AMTLU_SANITIZER 1
 #endif
 
 template <typename T> struct DefaultSingletonTraits;
 namespace base {
 class Thread;
 }
 namespace sandbox { class SetuidSandboxClient; }
 
@@ skipping 123 matching lines @@
 #if defined(ANY_OF_AMTLU_SANITIZER)
   scoped_ptr<__sanitizer_sandbox_arguments> sanitizer_args_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(LinuxSandbox);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_SANDBOX_LINUX_SANDBOX_LINUX_H_