GN: Remove dependency on //base for gmock.

This doesn't seem to be needed and makes it
impossible to build gmock for client projects
that doesn't have Chromium base.

BUG=webrtc:3441
R=brettw@chromium.org,tfarina@chromium.org

Review URL: https://codereview.chromium.org/311833004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@274893 0039d316-1c4b-4281-b951-d872f2087c98

tools/gn/secondary/testing/BUILD.gn

+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+source_set("gmock_mutant") {
+  sources = [
+    "gmock_mutant.h",  # gMock helpers
+  ]
+
+  deps = [ "//base" ]
+}

tools/gn/secondary/testing/gmock/BUILD.gn

@@ -28,7 +28,6 @@ static_library("gmock") {
     "src/gmock-matchers.cc",
     "src/gmock-spec-builders.cc",
     "src/gmock.cc",
-    "../gmock_mutant.h",  # gMock helpers
   ]
 
   # This project includes some stuff form gtest's guts.
@@ -38,8 +37,6 @@ static_library("gmock") {
     ":gmock_config",
     "//testing/gtest:gtest_config",
   ]
-
-  deps = [ "//base" ]
 }
 
 static_library("gmock_main") {