Build BoringSSL test tool

Adds GN code to always build BoringSSL test tool

b/360241262

third_party/boringssl/BUILD.generated.gni

@@ -0,0 +1,18 @@
+tool_sources = [
+  "src/tool/args.cc",
+  "src/tool/ciphers.cc",
+  "src/tool/const.cc",
+  "src/tool/digest.cc",
+  "src/tool/file.cc",
+  "src/tool/generate_ed25519.cc",
+  "src/tool/genrsa.cc",
+  "src/tool/internal.h",
+  "src/tool/pkcs12.cc",
+  "src/tool/rand.cc",
+  "src/tool/sign.cc",
+  "src/tool/speed.cc",
+  "src/tool/tool.cc",
+  "src/tool/transport_common.cc",
+  "src/tool/transport_common.h",
+]
+

third_party/boringssl/BUILD.gn

@@ -1,6 +1,7 @@
 import("//starboard/sabi/sabi.gni")
 import("//third_party/boringssl/buildfiles.gni")
 import("//starboard/build/config/os_definitions.gni")
+import("BUILD.generated.gni")
 
 declare_args() {
   asm_target_arch = target_cpu
@@ -177,3 +178,14 @@ static_library("crypto_full") {
     configs += [ "//starboard/build/config:speed" ]
   }
 }
+
+if (is_starboard) {
+  target(final_executable_type, "boringssl_tool") {
+    testonly = true
+    sources = tool_sources
+    deps = [
+      ":crypto",
+      "//starboard:starboard_group",
+    ]
+  }
+}

third_party/boringssl/src/tool/tool.cc

@@ -21,6 +21,7 @@
 
 #ifdef STARBOARD
 #include <starboard/client_porting/wrap_main/wrap_main.h>
+#define OPENSSL_NO_SOCK // avoid linking errors
 #endif
 
 #if defined(OPENSSL_WINDOWS)