Re-land "Flip 'Linux x64' bot on chromium waterfall to GN."

chrome/BUILD.gn

Index: chrome/BUILD.gn
diff --git a/chrome/BUILD.gn b/chrome/BUILD.gn
index 0a09f8e618d8f4f8b97c3f2bc0eb8045bccf4e16..305d2df39e8914895aed3fd58f909cb605f56bd9 100644
--- a/chrome/BUILD.gn
+++ b/chrome/BUILD.gn
@@ -1026,40 +1026,42 @@ if (is_linux) {
     ]
   }
 
-  action("linux_symbols") {
-    script = "//build/linux/dump_app_syms.py"
+  if (is_official_build) {
+    action("linux_symbols") {
+      script = "//build/linux/dump_app_syms.py"
 
-    dump_syms_label = "//breakpad:dump_syms($host_toolchain)"
-    dump_syms_binary =
-        get_label_info(dump_syms_label, "root_out_dir") + "/" + "dump_syms"
+      dump_syms_label = "//breakpad:dump_syms($host_toolchain)"
+      dump_syms_binary =
+          get_label_info(dump_syms_label, "root_out_dir") + "/" + "dump_syms"
 
-    chrome_binary = "$root_out_dir/chrome"
-    if (current_cpu == "x86") {
-      # Use "ia32" instead of "x86" for GYP compat.
-      symbol_file = "$root_out_dir/chrome.breakpad.ia32"
-    } else {
-      symbol_file = "$root_out_dir/chrome.breakpad.$current_cpu"
-    }
+      chrome_binary = "$root_out_dir/chrome"
+      if (current_cpu == "x86") {
+        # Use "ia32" instead of "x86" for GYP compat.
+        symbol_file = "$root_out_dir/chrome.breakpad.ia32"
+      } else {
+        symbol_file = "$root_out_dir/chrome.breakpad.$current_cpu"
+      }
 
-    inputs = [
-      chrome_binary,
-      dump_syms_binary,
-    ]
-    outputs = [
-      symbol_file,
-    ]
+      inputs = [
+        chrome_binary,
+        dump_syms_binary,
+      ]
+      outputs = [
+        symbol_file,
+      ]
 
-    args = [
-      "./" + rebase_path(dump_syms_binary, root_build_dir),
-      "0",  # TODO(GYP) This is linux_strip_binary if it is needed.
-      rebase_path(chrome_binary, root_build_dir),
-      rebase_path(symbol_file, root_build_dir),
-    ]
+      args = [
+        "./" + rebase_path(dump_syms_binary, root_build_dir),
+        "0",  # TODO(GYP) This is linux_strip_binary if it is needed.
+        rebase_path(chrome_binary, root_build_dir),
+        rebase_path(symbol_file, root_build_dir),
+      ]
 
-    deps = [
-      ":chrome",
-      dump_syms_label,
-    ]
+      deps = [
+        ":chrome",
+        dump_syms_label,
+      ]
+    }
   }
 
   # Copies some scripts and resources that are used for desktop integration.