Add setting to isolate zoom changes by default.

chrome/browser/ui/webui/settings/site_settings_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/site_settings_handler.h"
 
 #include <memory>
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/ui/webui/site_settings_helper.h"
@@ skipping 185 matching lines @@
       std::string host;
       ASSERT_TRUE(exception->GetString("origin", &host));
       ASSERT_EQ(expected_host, host);
 
       std::string zoom;
       ASSERT_TRUE(exception->GetString("zoom", &zoom));
       ASSERT_EQ(expected_zoom, zoom);
     }
   }
 
+  void ValidateZoomScope(bool expected_scope, size_t expected_total_calls) {
+    EXPECT_EQ(expected_total_calls, web_ui()->call_data().size());
+
+    const content::TestWebUI::CallData& data = *web_ui()->call_data().back();
+    EXPECT_EQ("cr.webUIListenerCallback", data.function_name());
+
+    std::string callback_id;
+    ASSERT_TRUE(data.arg1()->GetAsString(&callback_id));
+    EXPECT_EQ("onZoomScopeChanged", callback_id);
+
+    bool is_per_origin;
+    ASSERT_TRUE(data.arg2()->GetAsBoolean(&is_per_origin));
+    EXPECT_EQ(expected_scope, is_per_origin);
+  }
+
   void CreateIncognitoProfile() {
     incognito_profile_ = TestingProfile::Builder().BuildIncognito(&profile_);
   }
 
   void DestroyIncognitoProfile() {
     content::NotificationService::current()->Notify(
         chrome::NOTIFICATION_PROFILE_DESTROYED,
         content::Source<Profile>(static_cast<Profile*>(incognito_profile_)),
         content::NotificationService::NoDetails());
     profile_.SetOffTheRecordProfile(nullptr);
@@ skipping 166 matching lines @@
 
   args.AppendString("http://www.google.com");
   handler()->HandleRemoveZoomLevel(&args);
   ValidateZoom("", "", 3U);
 
   double default_level = host_zoom_map->GetDefaultZoomLevel();
   double level = host_zoom_map->GetZoomLevelForHostAndScheme("http", host);
   EXPECT_EQ(default_level, level);
 }
 
+TEST_F(SiteSettingsHandlerTest, ZoomScope) {
+  ChromeZoomLevelPrefs* zoom_level_prefs = profile()->GetZoomLevelPrefs();
+  ASSERT_TRUE(zoom_level_prefs);
+  EXPECT_TRUE(zoom_level_prefs->GetZoomScopeIsPerOriginPref());
+
+  zoom_level_prefs->SetZoomScopeIsPerOriginPref(false);
+  ValidateZoomScope(false, 1U);
+
+  base::ListValue args;
+  handler()->HandleFetchZoomScope(&args);
+  ValidateZoomScope(false, 2U);
+
+  args.AppendBoolean(true);
+  handler()->HandleSetZoomScopeIsPerOrigin(&args);
+  ValidateZoomScope(true, 3U);
+  EXPECT_TRUE(zoom_level_prefs->GetZoomScopeIsPerOriginPref());
+}
+
 }  // namespace settings