Fix android build.

src/snapshot/serializer-common.cc

Index: src/snapshot/serializer-common.cc
diff --git a/src/snapshot/serializer-common.cc b/src/snapshot/serializer-common.cc
index 6c400cd25ea2c9dfe1cd08a0c6bdf486e2bc8666..b1082f43587645c5e360eb78061f4ce67c2ed263 100644
--- a/src/snapshot/serializer-common.cc
+++ b/src/snapshot/serializer-common.cc
@@ -8,9 +8,10 @@
 #include "src/ic/stub-cache.h"
 #include "src/list-inl.h"
 
-#if defined(DEBUG) && defined(V8_OS_LINUX)
+#if defined(DEBUG) && defined(V8_OS_LINUX) && !defined(V8_OS_ANDROID)
+#define SYMBOLIZE_FUNCTION
 #include <execinfo.h>
-#endif  // DEBUG && V8_OS_LINUX
+#endif  // DEBUG && V8_OS_LINUX && !V8_OS_ANDROID
 
 namespace v8 {
 namespace internal {
@@ -40,9 +41,9 @@ uint32_t ExternalReferenceEncoder::Encode(Address address) const {
   if (entry == nullptr) {
     void* function_addr = address;
     v8::base::OS::PrintError("Unknown external reference %p.\n", function_addr);
-#if defined(DEBUG) && defined(V8_OS_LINUX)
+#ifdef SYMBOLIZE_FUNCTION
     v8::base::OS::PrintError("%s\n", backtrace_symbols(&function_addr, 1)[0]);
-#endif  // DEBUG && V8_OS_LINUX
+#endif  // SYMBOLIZE_FUNCTION
     v8::base::OS::Abort();
   }
   return static_cast<uint32_t>(reinterpret_cast<intptr_t>(entry->value));