Extract some account chooser views things for cross-platform use.

chrome/browser/ui/passwords/manage_passwords_view_utils.cc

 // Copyright 2015 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 "chrome/browser/ui/passwords/manage_passwords_view_utils.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/common/password_form.h"
 #include "components/password_manager/core/browser/affiliation_utils.h"
 #include "net/base/net_util.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/geometry/size.h"
+#include "ui/gfx/image/image_skia.h"
+#include "ui/gfx/image/image_skia_operations.h"
 #include "url/gurl.h"
 
+const int kAvatarImageSize = 50;
+
+gfx::ImageSkia ScaleImageForAccountAvatar(gfx::ImageSkia skia_image) {
+  gfx::Size size = skia_image.size();
+  if (size.height() != size.width()) {
+    gfx::Rect target(size);
+    int side = std::min(size.height(), size.width());
+    target.ClampToCenteredSize(gfx::Size(side, side));
+    skia_image = gfx::ImageSkiaOperations::ExtractSubset(skia_image, target);
+  }
+  return gfx::ImageSkiaOperations::CreateResizedImage(
+      skia_image,
+      skia::ImageOperations::RESIZE_BEST,
+      gfx::Size(kAvatarImageSize, kAvatarImageSize));
+}
+
 std::string GetHumanReadableOrigin(const autofill::PasswordForm& password_form,
                                    const std::string& languages) {
   password_manager::FacetURI facet_uri =
       password_manager::FacetURI::FromPotentiallyInvalidSpec(
           password_form.signon_realm);
   if (facet_uri.IsValidAndroidFacetURI())
     return facet_uri.scheme() + "://" + facet_uri.android_package_name();
   return base::UTF16ToUTF8(net::FormatUrl(password_form.origin, languages));
 }