Re-enable GN binary pulling.

This does not run it, just pulls the binary again.

R=scottmg@chromium.org

Review URL: https://codereview.chromium.org/203223007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257725 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -666,6 +666,51 @@ hooks = [
                "-s", "src/third_party/WebKit",
                "-o", "src/build/util/LASTCHANGE.blink"],
   },
+  # Pull GN binaries. This needs to be before running GYP below.
+  {
+    "name": "gn_win",
+    "pattern": "src/tools/gn/bin/win/gn.exe.sha1",
+    "action": [ "download_from_google_storage",
+                "--no_resume",
+                "--platform=win32",
+                "--no_auth",
+                "--bucket", "chromium-gn",
+                "-s", "src/tools/gn/bin/win/gn.exe.sha1",
+    ],
+  },
+  {
+    "name": "gn_mac",
+    "pattern": "src/tools/gn/bin/mac/gn.sha1",
+    "action": [ "download_from_google_storage",
+                "--no_resume",
+                "--platform=darwin",
+                "--no_auth",
+                "--bucket", "chromium-gn",
+                "-s", "src/tools/gn/bin/mac/gn.sha1",
+    ],
+  },
+  {
+    "name": "gn_linux",
+    "pattern": "src/tools/gn/bin/linux/gn.sha1",
+    "action": [ "download_from_google_storage",
+                "--no_resume",
+                "--platform=linux*",
+                "--no_auth",
+                "--bucket", "chromium-gn",
+                "-s", "src/tools/gn/bin/linux/gn.sha1",
+    ],
+  },
+  {
+    "name": "gn_linux32",
+    "pattern": "src/tools/gn/bin/linux/gn32.sha1",
+    "action": [ "download_from_google_storage",
+                "--no_resume",
+                "--platform=linux*",
+                "--no_auth",
+                "--bucket", "chromium-gn",
+                "-s", "src/tools/gn/bin/linux/gn32.sha1",
+    ],
+  },
   # Pull clang-format binaries using checked-in hashes.
   {
     "name": "clang_format_win",