GN: Add symlink rules for dump_syms, symupload

breakpad/BUILD.gn

Index: breakpad/BUILD.gn
diff --git a/breakpad/BUILD.gn b/breakpad/BUILD.gn
index 9dabd8176baf7dcd5522fe64158b2407005e1341..fc82660bdf43e92cdc4334f2a24e2f837dce6d87 100644
--- a/breakpad/BUILD.gn
+++ b/breakpad/BUILD.gn
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/symlink.gni")
 import("//testing/test.gni")
 
 if (is_android) {
@@ -472,6 +473,12 @@ if (is_linux || is_android) {
         "//build/config/sanitizers:deps",
       ]
     }
+  } else {
+    # Aliases for convenience.
+    host_symlink("dump_syms") {
+    }
+    host_symlink("symupload") {
+    }
   }
 
   static_library("client") {