[cros, user_manager] Move default user images constants and helper functions out of src/chrome.

components/user_manager/user_image/default_user_images.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 COMPONENTS_USER_MANAGER_USER_IMAGE_DEFAULT_USER_IMAGES_H_
+#define COMPONENTS_USER_MANAGER_USER_IMAGE_DEFAULT_USER_IMAGES_H_
+
+#include <cstddef>  // for size_t
+#include <string>
+
+#include "base/strings/string16.h"
+#include "components/user_manager/user_manager_export.h"
+
+namespace gfx {
+class ImageSkia;
+}
+
+namespace user_manager {
+
+// Returns URL to default user image with specified index.
+USER_MANAGER_EXPORT std::string GetDefaultImageUrl(int index);
+
+// Checks if the given URL points to one of the default images. If it is,
+// returns true and its index through |image_id|. If not, returns false.
+USER_MANAGER_EXPORT bool IsDefaultImageUrl(const std::string& url,
+                                           int* image_id);
+
+// Returns bitmap of default user image with specified index.
+USER_MANAGER_EXPORT const gfx::ImageSkia& GetDefaultImage(int index);
+
+// Returns a description of a default user image with specified index.
+USER_MANAGER_EXPORT base::string16 GetDefaultImageDescription(int index);
+
+// Resource IDs of default user images.
+USER_MANAGER_EXPORT extern const int kDefaultImageResourceIDs[];
+
+// String IDs of author names for default user images.
+USER_MANAGER_EXPORT extern const int kDefaultImageAuthorIDs[];
+
+// String IDs of websites for default user images.
+USER_MANAGER_EXPORT extern const int kDefaultImageWebsiteIDs[];
+
+// Number of default images.
+USER_MANAGER_EXPORT extern const int kDefaultImagesCount;
+
+// The starting index of default images available for selection. Note that
+// existing users may have images with smaller indices.
+USER_MANAGER_EXPORT extern const int kFirstDefaultImageIndex;
+
+/// Histogram values. ////////////////////////////////////////////////////////
+
+// Histogram value for user image taken from file.
+USER_MANAGER_EXPORT extern const int kHistogramImageFromFile;
+
+// Histogram value for user image taken from camera.
+USER_MANAGER_EXPORT extern const int kHistogramImageFromCamera;
+
+// Histogram value a previously used image from camera/file.
+USER_MANAGER_EXPORT extern const int kHistogramImageOld;
+
+// Histogram value for user image from G+ profile.
+USER_MANAGER_EXPORT extern const int kHistogramImageFromProfile;
+
+// Histogram value for user video (animated avatar) from camera.
+USER_MANAGER_EXPORT extern const int kHistogramVideoFromCamera;
+
+// Histogram value for user video from file.
+USER_MANAGER_EXPORT extern const int kHistogramVideoFromFile;
+
+// Number of possible histogram values for user images.
+USER_MANAGER_EXPORT extern const int kHistogramImagesCount;
+
+// Returns the histogram value corresponding to the given default image index.
+USER_MANAGER_EXPORT int GetDefaultImageHistogramValue(int index);
+
+}  // namespace user_manager
+
+#endif  // COMPONENTS_USER_MANAGER_USER_IMAGE_DEFAULT_USER_IMAGES_H_