Make compression_utils buildable also without Chromium.

Starting from https://chromium-review.googlesource.com/c/chromium/src/+/2171416
the target //tools/android/md5sum:md5sum_bin started to depend on
//third_party/zlib/google:compression_utils.

The standalone WebRTC build (without Chromium) depends on
//tools/android/md5sum:md5sum_bin, so this CL moves compression_utils out
of the "if (build_with_chromium)" block.

Bug: None
Change-Id: Ib9e12109398b88aad7750596cc72baf49b19658e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2193776
Commit-Queue: Mirko Bonadei <mbonadei@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#767692}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: c97b5d2a57523232407705c0a1b64cf8fa3b5910
diff --git a/google/BUILD.gn b/google/BUILD.gn
index a628d2f..4eddc61 100644
--- a/google/BUILD.gn
+++ b/google/BUILD.gn
@@ -21,18 +21,18 @@
       "//third_party/zlib:minizip",
     ]
   }
+}
 
-  static_library("compression_utils") {
-    sources = [
-      "compression_utils.cc",
-      "compression_utils.h",
-    ]
-    deps = [
-      ":compression_utils_portable",
-      "//base",
-      "//third_party/zlib",
-    ]
-  }
+static_library("compression_utils") {
+  sources = [
+    "compression_utils.cc",
+    "compression_utils.h",
+  ]
+  deps = [
+    ":compression_utils_portable",
+    "//base",
+    "//third_party/zlib",
+  ]
 }
 
 # This allows other users of Chromium's zlib library, but don't use Chromium's