[subresource_filter] Implement the "Smart" UI on Android

chrome/browser/subresource_filter/subresource_filter_browsertest.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 <map>
 #include <memory>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/path_service.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/histogram_tester.h"
+#include "base/test/simple_test_clock.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/metrics/subprocess_metrics_provider.h"
 #include "chrome/browser/page_load_metrics/observers/subresource_filter_metrics_observer.h"
 #include "chrome/browser/safe_browsing/test_safe_browsing_service.h"
 #include "chrome/browser/safe_browsing/v4_test_utils.h"
 #include "chrome/browser/subresource_filter/chrome_subresource_filter_client.h"
 #include "chrome/browser/subresource_filter/test_ruleset_publisher.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
@@ skipping 755 matching lines @@
   // page load right after start-up.
   ui_test_utils::NavigateToURL(browser(), url);
   EXPECT_FALSE(WasParsedScriptElementLoaded(web_contents()->GetMainFrame()));
 }
 
 IN_PROC_BROWSER_TEST_F(SubresourceFilterBrowserTest,
                        PromptShownAgainOnNextNavigation) {
   ASSERT_NO_FATAL_FAILURE(
       SetRulesetToDisallowURLsWithPathSuffix("included_script.js"));
   GURL url(GetTestUrl(kTestFrameSetPath));
+  GURL a_url(embedded_test_server()->GetURL(
+      "a.com", "/subresource_filter/frame_with_included_script.html"));
   ConfigureAsPhishingURL(url);
   base::HistogramTester tester;
   ui_test_utils::NavigateToURL(browser(), url);
   tester.ExpectBucketCount(kSubresourceFilterActionsHistogram, kActionUIShown,
                            1);
   // Check that the bubble is not shown again for this navigation.
   EXPECT_FALSE(IsDynamicScriptElementLoaded(FindFrameByName("five")));
   tester.ExpectBucketCount(kSubresourceFilterActionsHistogram, kActionUIShown,
                            1);
-  // Check that bubble is shown for new navigation.
-  ui_test_utils::NavigateToURL(browser(), url);
+  // Check that bubble is shown for new navigation. Must be cross site to avoid
+  // triggering smart UI on Android.
+  ConfigureAsPhishingURL(a_url);
+  ui_test_utils::NavigateToURL(browser(), a_url);
+  ContentSubresourceFilterDriverFactory* driver_factory =
+      ContentSubresourceFilterDriverFactory::FromWebContents(web_contents());
+  ChromeSubresourceFilterClient* client =
+      static_cast<ChromeSubresourceFilterClient*>(driver_factory->client());
   tester.ExpectBucketCount(kSubresourceFilterActionsHistogram, kActionUIShown,
-                           2);
+                           client->UsingSmartUI() ? 1 : 2);
 }
 
 IN_PROC_BROWSER_TEST_F(SubresourceFilterBrowserTest,
                        CrossSiteSubFrameActivationWithoutWhitelist) {
   GURL a_url(embedded_test_server()->GetURL(
       "a.com", "/subresource_filter/frame_cross_site_set.html"));
   ConfigureAsPhishingURL(a_url);
   ASSERT_NO_FATAL_FAILURE(
       SetRulesetToDisallowURLsWithPathSuffix("included_script.js"));
   ui_test_utils::NavigateToURL(browser(), a_url);
@@ skipping 108 matching lines @@
   EXPECT_TRUE(WasParsedScriptElementLoaded(web_contents()->GetMainFrame()));
 
   // A cross site blacklisted navigation should stay activated, however.
   GURL a_url(embedded_test_server()->GetURL(
       "a.com", "/subresource_filter/frame_with_included_script.html"));
   ConfigureAsPhishingURL(a_url);
   ui_test_utils::NavigateToURL(browser(), a_url);
   EXPECT_FALSE(WasParsedScriptElementLoaded(web_contents()->GetMainFrame()));
 }
 
+// Test the "smart" UI, aka the logic to hide the UI on subsequent same-domain
+// navigations, until a certain time threshold has been reached. This is an
+// android-only feature.
+#if defined(OS_ANDROID)
+IN_PROC_BROWSER_TEST_F(SubresourceFilterBrowserTest,
+                       DoNotShowUIUntilThresholdReached) {
+  ASSERT_NO_FATAL_FAILURE(
+      SetRulesetToDisallowURLsWithPathSuffix("included_script.js"));
+  GURL a_url(embedded_test_server()->GetURL(
+      "a.com", "/subresource_filter/frame_with_included_script.html"));
+  GURL b_url(embedded_test_server()->GetURL(
+      "b.com", "/subresource_filter/frame_with_included_script.html"));
+  // Test utils only support one blacklisted site at a time.
+  // TODO(csharrison): Add support for more than one URL.
+  ConfigureAsPhishingURL(a_url);
+
+  // Cast is safe because this is the only type of client in non-unittest code.
+  ChromeSubresourceFilterClient* client =
+      static_cast<ChromeSubresourceFilterClient*>(
+          ContentSubresourceFilterDriverFactory::FromWebContents(web_contents())
+              ->client());
+  auto test_clock = base::MakeUnique<base::SimpleTestClock>();
+  base::SimpleTestClock* raw_clock = test_clock.get();
+  client->set_clock_for_testing(std::move(test_clock));
+  base::Time now = raw_clock->Now();
+
+  base::HistogramTester histogram_tester;
+
+  // First load should trigger the UI.
+  ui_test_utils::NavigateToURL(browser(), a_url);
+  EXPECT_FALSE(WasParsedScriptElementLoaded(web_contents()->GetMainFrame()));
+  EXPECT_TRUE(client->shown_for_navigation());
+
+  histogram_tester.ExpectBucketCount(kSubresourceFilterActionsHistogram,
+                                     kActionUISuppressed, 0);
+
+  // Second load should not trigger the UI, but should still filter content.
+  ui_test_utils::NavigateToURL(browser(), a_url);
+  EXPECT_FALSE(WasParsedScriptElementLoaded(web_contents()->GetMainFrame()));
+  EXPECT_FALSE(client->shown_for_navigation());
+
+  histogram_tester.ExpectBucketCount(kSubresourceFilterActionsHistogram,
+                                     kActionUISuppressed, 1);
+
+  ConfigureAsPhishingURL(b_url);
+
+  // Load to another domain should trigger the UI.
+  ui_test_utils::NavigateToURL(browser(), b_url);
+  EXPECT_FALSE(WasParsedScriptElementLoaded(web_contents()->GetMainFrame()));
+  EXPECT_TRUE(client->shown_for_navigation());
+
+  ConfigureAsPhishingURL(a_url);
+
+  // Fast forward the clock, and a_url should trigger the UI again.
+  raw_clock->SetNow(now + base::TimeDelta::FromHours(24));
+  ui_test_utils::NavigateToURL(browser(), a_url);
+  EXPECT_FALSE(WasParsedScriptElementLoaded(web_contents()->GetMainFrame()));
+  EXPECT_TRUE(client->shown_for_navigation());
+
+  histogram_tester.ExpectBucketCount(kSubresourceFilterActionsHistogram,
+                                     kActionUISuppressed, 1);
+}
+#endif
+
 IN_PROC_BROWSER_TEST_P(SubresourceFilterWebSocketBrowserTest, BlockWebSocket) {
   GURL url(GetTestUrl(
       base::StringPrintf("subresource_filter/page_with_websocket.html?%s",
                          GetParam() == IN_WORKER ? "inWorker" : "")));
   GURL websocket_url(GetWebSocketUrl("echo-with-no-extension"));
   ConfigureAsPhishingURL(url);
   ASSERT_NO_FATAL_FAILURE(
       SetRulesetToDisallowURLsWithPathSuffix("echo-with-no-extension"));
   ui_test_utils::NavigateToURL(browser(), url);
   CreateWebSocketAndExpectResult(websocket_url,
@@ skipping 345 matching lines @@
                                    std::string(kSubresourceFilterOnlySuffix)),
               ::testing::IsEmpty());
 
   EXPECT_THAT(tester.GetAllSamples(std::string(kNavigationChainSize) +
                                    std::string(kSubresourceFilterOnlySuffix)),
               ::testing::IsEmpty());
 }
 #endif
 
 }  // namespace subresource_filter