Move ZoomObserver, ZoomController and ZoomEventManager to components/.

chrome/browser/ui/zoom/zoom_controller_unittest.cc

 // Copyright (c) 2012 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 "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
-#include "chrome/browser/ui/zoom/zoom_controller.h"
-#include "chrome/browser/ui/zoom/zoom_observer.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_profile.h"
+#include "components/ui/zoom/zoom_controller.h"
+#include "components/ui/zoom/zoom_observer.h"
 #include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/common/frame_navigate_params.h"
 #include "content/public/test/test_renderer_host.h"
 #include "content/public/test/test_utils.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using ui_zoom::ZoomController;
+
 bool operator==(const ZoomController::ZoomChangedEventData& lhs,
                 const ZoomController::ZoomChangedEventData& rhs) {
   return lhs.web_contents == rhs.web_contents &&
          lhs.old_zoom_level == rhs.old_zoom_level &&
          lhs.new_zoom_level == rhs.new_zoom_level &&
          lhs.zoom_mode == rhs.zoom_mode &&
          lhs.can_show_bubble == rhs.can_show_bubble;
 }
 
-class TestZoomObserver : public ZoomObserver {
+class ZoomChangedWatcher : public ui_zoom::ZoomObserver {
  public:
-  MOCK_METHOD1(OnZoomChanged,
-               void(const ZoomController::ZoomChangedEventData&));
+  ZoomChangedWatcher(
+      ZoomController* zoom_controller,
+      const ZoomController::ZoomChangedEventData& expected_event_data)
+      : zoom_controller_(zoom_controller),
+        expected_event_data_(expected_event_data),
+        message_loop_runner_(new content::MessageLoopRunner) {
+    zoom_controller_->AddObserver(this);
+  }
+  ~ZoomChangedWatcher() override { zoom_controller_->RemoveObserver(this); }
+
+  void Wait() { message_loop_runner_->Run(); }
+
+  void OnZoomChanged(
+      const ZoomController::ZoomChangedEventData& event_data) override {
+    if (event_data == expected_event_data_)
+      message_loop_runner_->Quit();
+  }
+
+ private:
+  ZoomController* zoom_controller_;
+  ZoomController::ZoomChangedEventData expected_event_data_;
+  scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(ZoomChangedWatcher);
 };
 
 class ZoomControllerTest : public ChromeRenderViewHostTestHarness {
  public:
   void SetUp() override {
     ChromeRenderViewHostTestHarness::SetUp();
     zoom_controller_.reset(new ZoomController(web_contents()));
-    zoom_controller_->AddObserver(&zoom_observer_);
 
     // This call is needed so that the RenderViewHost reports being alive. This
     // is only important for tests that call ZoomController::SetZoomLevel().
     content::RenderViewHostTester::For(rvh())->CreateRenderView(
         base::string16(), MSG_ROUTING_NONE, MSG_ROUTING_NONE, -1, false);
   }
 
   void TearDown() override {
-    zoom_controller_->RemoveObserver(&zoom_observer_);
     zoom_controller_.reset();
     ChromeRenderViewHostTestHarness::TearDown();
   }
 
  protected:
   scoped_ptr<ZoomController> zoom_controller_;
-  TestZoomObserver zoom_observer_;
 };
 
 TEST_F(ZoomControllerTest, DidNavigateMainFrame) {
   double zoom_level = zoom_controller_->GetZoomLevel();
   ZoomController::ZoomChangedEventData zoom_change_data(
       web_contents(),
       zoom_level,
       zoom_level,
       ZoomController::ZOOM_MODE_DEFAULT,
       false);
-  EXPECT_CALL(zoom_observer_, OnZoomChanged(zoom_change_data)).Times(1);
+  ZoomChangedWatcher zoom_change_watcher(zoom_controller_.get(),
+                                         zoom_change_data);
   zoom_controller_->DidNavigateMainFrame(content::LoadCommittedDetails(),
                                          content::FrameNavigateParams());
+  zoom_change_watcher.Wait();
 }
 
 TEST_F(ZoomControllerTest, Observe_ZoomController) {
   double old_zoom_level = zoom_controller_->GetZoomLevel();
   double new_zoom_level = 110.0;
 
   NavigateAndCommit(GURL("about:blank"));
 
   ZoomController::ZoomChangedEventData zoom_change_data1(
       web_contents(),
       old_zoom_level,
       old_zoom_level,
       ZoomController::ZOOM_MODE_ISOLATED,
       true /* can_show_bubble */);
-  EXPECT_CALL(zoom_observer_, OnZoomChanged(zoom_change_data1)).Times(1);
 
-  zoom_controller_->SetZoomMode(ZoomController::ZOOM_MODE_ISOLATED);
+  {
+    ZoomChangedWatcher zoom_change_watcher1(zoom_controller_.get(),
+                                            zoom_change_data1);
+    zoom_controller_->SetZoomMode(ZoomController::ZOOM_MODE_ISOLATED);
+    zoom_change_watcher1.Wait();
+  }
 
   ZoomController::ZoomChangedEventData zoom_change_data2(
       web_contents(),
       old_zoom_level,
       new_zoom_level,
       ZoomController::ZOOM_MODE_ISOLATED,
       true /* can_show_bubble */);
-  EXPECT_CALL(zoom_observer_, OnZoomChanged(zoom_change_data2)).Times(1);
 
-  zoom_controller_->SetZoomLevel(new_zoom_level);
+  {
+    ZoomChangedWatcher zoom_change_watcher2(zoom_controller_.get(),
+                                            zoom_change_data2);
+    zoom_controller_->SetZoomLevel(new_zoom_level);
+    zoom_change_watcher2.Wait();
+  }
 }