Remove the chrome include in extensions\DEPS by creating a test data directory for extensions.

extensions/common/extension_paths.cc

+// Copyright (c) 2013 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.
+
+#include "extensions/common/extension_paths.h"
+
+#include "base/file_util.h"
+#include "base/path_service.h"
+
+namespace extensions {
+
+bool PathProvider(int key, base::FilePath* result) {
+  switch (key) {
+    case DIR_TEST_DATA: {
+      base::FilePath cur;
+      if (!PathService::Get(base::DIR_SOURCE_ROOT, &cur))
+        return false;
+      cur = cur.Append(FILE_PATH_LITERAL("extensions"));
+      cur = cur.Append(FILE_PATH_LITERAL("test"));
+      cur = cur.Append(FILE_PATH_LITERAL("data"));
+      if (!file_util::PathExists(cur))  // we don't want to create this
+        return false;
+
+      *result = cur;
+      return true;
+      break;
+    }
+    default:
+      return false;
+  }
+
+  return false;
+}
+
+// This cannot be done as a static initializer sadly since Visual Studio will
+// eliminate this object file if there is no direct entry point into it.
+void RegisterPathProvider() {
+  PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
+}
+
+}  // namespace extensions