MD Settings: get the avatar icon the same way the user switcher does

chrome/browser/ui/webui/settings/profile_info_handler_unittest.cc

 // Copyright 2016 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/webui/settings/profile_info_handler.h"
 
 #include <memory>
 
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "chrome/test/base/testing_profile_manager.h"
 #include "components/prefs/scoped_user_pref_update.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "content/public/test/test_web_ui.h"
+#include "net/base/data_url.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/login/users/fake_chrome_user_manager.h"
 #include "chrome/browser/chromeos/login/users/scoped_user_manager_enabler.h"
 #endif
 
 namespace settings {
 
 namespace {
 
@@ skipping 43 matching lines @@
     std::string name;
     std::string icon_url;
     ASSERT_TRUE(response->GetString("name", &name));
     ASSERT_TRUE(response->GetString("iconUrl", &icon_url));
 
 #if defined(OS_CHROMEOS)
     EXPECT_EQ(fake_id, name);
     EXPECT_FALSE(icon_url.empty());
 #else
     EXPECT_EQ("Profile 1", name);
-    EXPECT_EQ("chrome://theme/IDR_PROFILE_AVATAR_0", icon_url);
+    std::string mime, charset, data;  // All unused.
+    EXPECT_TRUE(net::DataURL::Parse(GURL(icon_url), &mime, &charset, &data));

[dschuyler, 2017/04/11 23:36:48]

How about something like the tests done here that check the mimetype and the png
data (i.e. doing something similar here)
https://cs.chromium.org/chromium/src/content/browser/accessibility/accessibil...

[Dan Beam, 2017/04/11 23:50:32]

Done.

 #endif
   }
 
   content::TestWebUI* web_ui() { return &web_ui_; }
   Profile* profile() const { return profile_; }
   TestProfileInfoHandler* handler() const { return handler_.get(); }
 
  private:
   content::TestBrowserThreadBundle thread_bundle_;
   TestingProfileManager profile_manager_;
@@ skipping 88 matching lines @@
   ASSERT_TRUE(data.arg1()->GetAsString(&event_id));
   EXPECT_EQ(ProfileInfoHandler::kProfileManagesSupervisedUsersChangedEventName,
             event_id);
 
   bool has_supervised_users = false;
   ASSERT_TRUE(data.arg2()->GetAsBoolean(&has_supervised_users));
   EXPECT_TRUE(has_supervised_users);
 }
 
 }  // namespace settings