Reland 1: "mac: Allow Chrome to hand off its active URL to other devices."

chrome/browser/app_controller_mac_browsertest.mm

Index: chrome/browser/app_controller_mac_browsertest.mm
diff --git a/chrome/browser/app_controller_mac_browsertest.mm b/chrome/browser/app_controller_mac_browsertest.mm
index a136a1267f4744dd7b2011a483903a20b1e2d52f..040018887e7e94eab9f68be8a805f1e2467376ff 100644
--- a/chrome/browser/app_controller_mac_browsertest.mm
+++ b/chrome/browser/app_controller_mac_browsertest.mm
@@ -35,9 +35,11 @@
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
 #include "components/bookmarks/test/bookmark_test_helpers.h"
 #include "components/signin/core/common/profile_management_switches.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/test/browser_test_utils.h"
 #include "content/public/test/test_navigation_observer.h"
 #include "extensions/browser/app_window/app_window_registry.h"
 #include "extensions/common/extension.h"
@@ -481,3 +483,144 @@ IN_PROC_BROWSER_TEST_F(AppControllerMainMenuBrowserTest,
 }
 
 }  // namespace
+
+//--------------------------AppControllerHandoffBrowserTest---------------------
+
+static GURL g_handoff_url;
+
+@interface AppController (BrowserTest)
+- (BOOL)new_shouldUseHandoff;
+- (void)new_passURLToHandoffManager:(const GURL&)handoffURL;
+@end
+
+@implementation AppController (BrowserTest)
+- (BOOL)new_shouldUseHandoff {
+  return YES;
+}
+
+- (void)new_passURLToHandoffManager:(const GURL&)handoffURL {
+  g_handoff_url = handoffURL;
+}
+@end
+
+namespace {
+
+class AppControllerHandoffBrowserTest : public InProcessBrowserTest {
+ protected:
+  AppControllerHandoffBrowserTest() {}
+
+  // Exchanges the implementations of the two selectors on the class
+  // AppController.
+  void ExchangeSelectors(SEL originalMethod, SEL newMethod) {
+    Class appControllerClass = NSClassFromString(@"AppController");
+
+    ASSERT_TRUE(appControllerClass != nil);
+
+    Method original =
+        class_getInstanceMethod(appControllerClass, originalMethod);
+    Method destination = class_getInstanceMethod(appControllerClass, newMethod);
+
+    ASSERT_TRUE(original != NULL);
+    ASSERT_TRUE(destination != NULL);
+
+    method_exchangeImplementations(original, destination);
+  }
+
+  // Swizzle Handoff related implementations.
+  void SetUpInProcessBrowserTestFixture() override {
+    // Handoff is only available on OSX 10.10+. This swizzle makes the logic
+    // run on all OSX versions.
+    SEL originalMethod = @selector(shouldUseHandoff);
+    SEL newMethod = @selector(new_shouldUseHandoff);
+    ExchangeSelectors(originalMethod, newMethod);
+
+    // This swizzle intercepts the URL that would be sent to the Handoff
+    // Manager, and instead puts it into a variable accessible to this test.
+    originalMethod = @selector(passURLToHandoffManager:);
+    newMethod = @selector(new_passURLToHandoffManager:);
+    ExchangeSelectors(originalMethod, newMethod);
+  }
+
+  // Closes the tab, and waits for the close to finish.
+  void CloseTab(Browser* browser, int index) {
+    content::WebContentsDestroyedWatcher destroyed_watcher(
+        browser->tab_strip_model()->GetWebContentsAt(index));
+    browser->tab_strip_model()->CloseWebContentsAt(
+        index, TabStripModel::CLOSE_CREATE_HISTORICAL_TAB);
+    destroyed_watcher.Wait();
+  }
+};
+
+// Tests that as a user switches between tabs, navigates within a tab, and
+// switches between browser windows, the correct URL is being passed to the
+// Handoff.
+IN_PROC_BROWSER_TEST_F(AppControllerHandoffBrowserTest, TestHandoffURLs) {
+  ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
+  EXPECT_EQ(g_handoff_url, GURL(url::kAboutBlankURL));
+
+  // Test that navigating to a URL updates the handoff URL.
+  GURL test_url1 = embedded_test_server()->GetURL("/title1.html");
+  ui_test_utils::NavigateToURL(browser(), test_url1);
+  EXPECT_EQ(g_handoff_url, test_url1);
+
+  // Test that opening a new tab updates the handoff URL.
+  GURL test_url2 = embedded_test_server()->GetURL("/title2.html");
+  chrome::NavigateParams params(browser(), test_url2, ui::PAGE_TRANSITION_LINK);
+  params.disposition = NEW_FOREGROUND_TAB;
+  ui_test_utils::NavigateToURL(&params);
+  EXPECT_EQ(g_handoff_url, test_url2);
+
+  // Test that switching tabs updates the handoff URL.
+  browser()->tab_strip_model()->ActivateTabAt(0, true);
+  EXPECT_EQ(g_handoff_url, test_url1);
+
+  // Test that closing the current tab updates the handoff URL.
+  CloseTab(browser(), 0);
+  EXPECT_EQ(g_handoff_url, test_url2);
+
+  // Test that opening a new browser window updates the handoff URL.
+  GURL test_url3 = embedded_test_server()->GetURL("/title3.html");
+  ui_test_utils::NavigateToURLWithDisposition(
+      browser(), GURL(test_url3), NEW_WINDOW,
+      ui_test_utils::BROWSER_TEST_WAIT_FOR_BROWSER);
+  EXPECT_EQ(g_handoff_url, test_url3);
+
+  // Check that there are exactly 2 browsers.
+  BrowserList* active_browser_list =
+      BrowserList::GetInstance(chrome::GetActiveDesktop());
+  EXPECT_EQ(2u, active_browser_list->size());
+
+  // Close the one and only tab for the second browser window.
+  Browser* browser2 = active_browser_list->get(1);
+  CloseTab(browser2, 0);
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(g_handoff_url, test_url2);
+
+  // The URLs of incognito windows should not be passed to Handoff.
+  GURL test_url4 = embedded_test_server()->GetURL("/simple.html");
+  ui_test_utils::NavigateToURLWithDisposition(
+      browser(), GURL(test_url4), OFF_THE_RECORD,
+      ui_test_utils::BROWSER_TEST_WAIT_FOR_BROWSER);
+  EXPECT_EQ(g_handoff_url, GURL());
+
+  // Open a new tab in the incognito window.
+  EXPECT_EQ(2u, active_browser_list->size());
+  Browser* browser3 = active_browser_list->get(1);
+  ui_test_utils::NavigateToURLWithDisposition(
+      browser3, test_url4, NEW_FOREGROUND_TAB,
+      ui_test_utils::BROWSER_TEST_WAIT_FOR_TAB);
+  EXPECT_EQ(g_handoff_url, GURL());
+
+  // Navigate the current tab in the incognito window.
+  ui_test_utils::NavigateToURLWithDisposition(
+      browser3, test_url1, CURRENT_TAB,
+      ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
+  EXPECT_EQ(g_handoff_url, GURL());
+
+  // Activate the original browser window.
+  Browser* browser1 = active_browser_list->get(0);
+  browser1->window()->Show();
+  EXPECT_EQ(g_handoff_url, test_url2);
+}
+
+}  // namespace