Move OmahaQueryParams to a component and add a delegate interface.

chrome/browser/omaha_query_params/omaha_query_params.h

-// 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.
-
-#ifndef CHROME_BROWSER_OMAHA_QUERY_PARAMS_OMAHA_QUERY_PARAMS_H_
-#define CHROME_BROWSER_OMAHA_QUERY_PARAMS_OMAHA_QUERY_PARAMS_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-
-namespace chrome {
-
-class OmahaQueryParams {
- public:
-  enum ProdId {
-    CHROME = 0,
-    CRX,
-  };
-
-  // Generates a string of URL query paramaters to be used when getting
-  // component and extension updates. Includes the following fields: os, arch,
-  // prod, prodchannel, prodversion, lang.
-  static std::string Get(ProdId prod);
-
-  // Returns the value we use for the "prod=" parameter. Possible return values
-  // include "chrome", "chromecrx", "chromiumcrx", and "unknown".
-  static const char* GetProdIdString(chrome::OmahaQueryParams::ProdId prod);
-
-  // Returns the value we use for the "os=" parameter. Possible return values
-  // include: "mac", "win", "android", "cros", "linux", and "openbsd".
-  static const char* GetOS();
-
-  // Returns the value we use for the "arch=" parameter. Possible return values
-  // include: "x86", "x64", and "arm".
-  static const char* GetArch();
-
-  // Returns the value we use for the "nacl_arch" parameter. Note that this may
-  // be different from the "arch" parameter above (e.g. one may be 32-bit and
-  // the other 64-bit). Possible return values include: "x86-32", "x86-64",
-  // "arm", and "mips32".
-  static const char* GetNaclArch();
-
-  // Returns the value we use for the "updaterchannel=" and "prodchannel="
-  // parameters. Possible return values include: "canary", "dev", "beta", and
-  // "stable".
-  static const char* GetChannelString();
-
-  // Returns the language for the present locale. Possible return values are
-  // standard tags for languages, such as "en", "en-US", "de", "fr", "af", etc.
-  static const char* GetLang();
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(OmahaQueryParams);
-};
-
-}  // namespace chrome
-
-#endif  // CHROME_BROWSER_OMAHA_QUERY_PARAMS_OMAHA_QUERY_PARAMS_H_