[subresource_filter] Remove Forwarding NavigationThrottles

components/subresource_filter/content/browser/content_subresource_filter_driver_factory.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 "components/subresource_filter/content/browser/content_subresource_filter_driver_factory.h"
 
 #include "base/feature_list.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/rand_util.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "components/subresource_filter/content/browser/content_activation_list_utils.h"
 #include "components/subresource_filter/content/browser/subresource_filter_client.h"
 #include "components/subresource_filter/core/browser/subresource_filter_features.h"
 #include "components/subresource_filter/core/common/activation_list.h"
 #include "components/subresource_filter/core/common/activation_state.h"
 #include "content/public/browser/navigation_handle.h"
-#include "content/public/browser/navigation_throttle.h"
 #include "content/public/browser/web_contents.h"
 #include "net/base/net_errors.h"
 #include "url/gurl.h"
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(
     subresource_filter::ContentSubresourceFilterDriverFactory);
 
 namespace subresource_filter {
 
 namespace {
 
-std::string DistillURLToHostAndPath(const GURL& url) {
-  return url.host() + url.path();
-}
-
 // Returns true with a probability given by |performance_measurement_rate| if
 // ThreadTicks is supported, otherwise returns false.
 bool ShouldMeasurePerformanceForPageLoad(double performance_measurement_rate) {
   if (!base::ThreadTicks::IsSupported())
     return false;
   return performance_measurement_rate == 1 ||
          (performance_measurement_rate > 0 &&
           base::RandDouble() < performance_measurement_rate);
 }
 
@@ skipping 27 matching lines @@
       client_(client),
       throttle_manager_(
           base::MakeUnique<ContentSubresourceFilterThrottleManager>(
               this,
               client_->GetRulesetDealer(),
               web_contents)) {}
 
 ContentSubresourceFilterDriverFactory::
     ~ContentSubresourceFilterDriverFactory() {}
 
-void ContentSubresourceFilterDriverFactory::
-    OnMainResourceMatchedSafeBrowsingBlacklist(
-        const GURL& url,
-        safe_browsing::SBThreatType threat_type,
-        safe_browsing::ThreatPatternType threat_type_metadata) {
-  AddActivationListMatch(
-      url, GetListForThreatTypeAndMetadata(threat_type, threat_type_metadata));
+void ContentSubresourceFilterDriverFactory::OnSafeBrowsingMatchComputed(
+    content::NavigationHandle* navigation_handle,
+    safe_browsing::SBThreatType threat_type,
+    safe_browsing::ThreatPatternType threat_type_metadata) {
+  DCHECK(navigation_handle->IsInMainFrame());
+  DCHECK(!navigation_handle->IsSameDocument());
+  if (navigation_handle->GetNetErrorCode() != net::OK)
+    return;
+
+  ActivationList activation_list =
+      GetListForThreatTypeAndMetadata(threat_type, threat_type_metadata);
+  const GURL& url = navigation_handle->GetURL();
+  const content::Referrer& referrer = navigation_handle->GetReferrer();
+  ui::PageTransition transition = navigation_handle->GetPageTransition();
+
+  if (activation_options_.should_whitelist_site_on_reload &&
+      NavigationIsPageReload(url, referrer, transition)) {
+    // Whitelist this host for the current as well as subsequent navigations.
+    client_->WhitelistInCurrentWebContents(url);
+  }
+
+  ComputeActivationForMainFrameNavigation(navigation_handle, activation_list);
+  DCHECK_NE(activation_decision_, ActivationDecision::UNKNOWN);
+
+  // Check for whitelisted status last, so that the client gets an accurate
+  // indication of whether there would be activation otherwise.
+  bool whitelisted = client_->OnPageActivationComputed(
+      navigation_handle,
+      activation_options_.activation_level == ActivationLevel::ENABLED);
+
+  // Only reset the activation decision reason if we would have activated.
+  if (whitelisted && activation_decision_ == ActivationDecision::ACTIVATED) {
+    TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("loading"), "ActivationWhitelisted");
+    activation_decision_ = ActivationDecision::URL_WHITELISTED;
+    activation_options_ = Configuration::ActivationOptions();
+  }
+
+  if (activation_decision_ != ActivationDecision::ACTIVATED) {
+    DCHECK_EQ(activation_options_.activation_level, ActivationLevel::DISABLED);
+    return;
+  }
+
+  DCHECK_NE(activation_options_.activation_level, ActivationLevel::DISABLED);
+  ActivationState state = ActivationState(activation_options_.activation_level);
+  state.measure_performance = ShouldMeasurePerformanceForPageLoad(
+      activation_options_.performance_measurement_rate);
+  // TODO(csharrison): Set state.enable_logging based on metadata returns from
+  // the safe browsing filter, when it is available. Add tests for this
+  // behavior.
+  throttle_manager_->NotifyPageActivationComputed(navigation_handle, state);
 }
 
 void ContentSubresourceFilterDriverFactory::
     ComputeActivationForMainFrameNavigation(
-        content::NavigationHandle* navigation_handle) {
+        content::NavigationHandle* navigation_handle,
+        ActivationList matched_list) {
   const GURL& url(navigation_handle->GetURL());
 
   if (!url.SchemeIsHTTPOrHTTPS()) {
     activation_decision_ = ActivationDecision::UNSUPPORTED_SCHEME;
     activation_options_ = Configuration::ActivationOptions();
     return;
   }
 
   const auto config_list = GetEnabledConfigurations();
   const auto highest_priority_activated_config =
       std::find_if(config_list->configs_by_decreasing_priority().begin(),
                    config_list->configs_by_decreasing_priority().end(),
-                   [&url, this](const Configuration& config) {
+                   [&url, matched_list, this](const Configuration& config) {
                      return DoesMainFrameURLSatisfyActivationConditions(
-                         url, config.activation_conditions);
+                         url, config.activation_conditions, matched_list);
                    });
 
   bool has_activated_config =
       highest_priority_activated_config !=
       config_list->configs_by_decreasing_priority().end();
   TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("loading"),
                "ContentSubresourceFilterDriverFactory::"
                "ComputeActivationForMainFrameNavigation",
                "highest_priority_activated_config",
                has_activated_config
                    ? highest_priority_activated_config->ToTracedValue()
                    : base::MakeUnique<base::trace_event::TracedValue>());
   if (!has_activated_config) {
     activation_decision_ = ActivationDecision::ACTIVATION_CONDITIONS_NOT_MET;
     activation_options_ = Configuration::ActivationOptions();
     return;
   }
 
   activation_options_ = highest_priority_activated_config->activation_options;
   activation_decision_ =
       activation_options_.activation_level == ActivationLevel::DISABLED
           ? ActivationDecision::ACTIVATION_DISABLED
           : ActivationDecision::ACTIVATED;
 }
 
 bool ContentSubresourceFilterDriverFactory::
     DoesMainFrameURLSatisfyActivationConditions(
         const GURL& url,
-        const Configuration::ActivationConditions& conditions) const {
+        const Configuration::ActivationConditions& conditions,
+        ActivationList matched_list) const {
   switch (conditions.activation_scope) {
     case ActivationScope::ALL_SITES:
       return true;
     case ActivationScope::ACTIVATION_LIST:
-      if (DidURLMatchActivationList(url, conditions.activation_list))
+      if (conditions.activation_list == matched_list)
         return true;
       if (conditions.activation_list == ActivationList::PHISHING_INTERSTITIAL &&
-          DidURLMatchActivationList(
-              url, ActivationList::SOCIAL_ENG_ADS_INTERSTITIAL)) {
+          matched_list == ActivationList::SOCIAL_ENG_ADS_INTERSTITIAL) {
         // Handling special case, where activation on the phishing sites also
         // mean the activation on the sites with social engineering metadata.
         return true;
       }
       return false;
     case ActivationScope::NO_SITES:
       return false;
   }
   NOTREACHED();
   return false;
 }
 
 void ContentSubresourceFilterDriverFactory::OnReloadRequested() {
   UMA_HISTOGRAM_BOOLEAN("SubresourceFilter.Prompt.NumReloads", true);
   const GURL& whitelist_url = web_contents()->GetLastCommittedURL();
 
   // Only whitelist via content settings when using the experimental UI,
   // otherwise could get into a situation where content settings cannot be
   // adjusted.
   if (base::FeatureList::IsEnabled(
           subresource_filter::kSafeBrowsingSubresourceFilterExperimentalUI)) {
     client_->WhitelistByContentSettings(whitelist_url);
   } else {
     client_->WhitelistInCurrentWebContents(whitelist_url);
   }
   web_contents()->GetController().Reload(content::ReloadType::NORMAL, true);
 }
 
-void ContentSubresourceFilterDriverFactory::WillProcessResponse(
-    content::NavigationHandle* navigation_handle) {
-  DCHECK(!navigation_handle->IsSameDocument());
-  if (!navigation_handle->IsInMainFrame() ||
-      navigation_handle->GetNetErrorCode() != net::OK) {
-    return;
-  }
-
-  const GURL& url = navigation_handle->GetURL();
-  const content::Referrer& referrer = navigation_handle->GetReferrer();
-  ui::PageTransition transition = navigation_handle->GetPageTransition();
-
-  if (activation_options_.should_whitelist_site_on_reload &&
-      NavigationIsPageReload(url, referrer, transition)) {
-    // Whitelist this host for the current as well as subsequent navigations.
-    client_->WhitelistInCurrentWebContents(url);
-  }
-
-  ComputeActivationForMainFrameNavigation(navigation_handle);
-  DCHECK_NE(activation_decision_, ActivationDecision::UNKNOWN);
-
-  // Check for whitelisted status last, so that the client gets an accurate
-  // indication of whether there would be activation otherwise.
-  bool whitelisted = client_->OnPageActivationComputed(
-      navigation_handle,
-      activation_options_.activation_level == ActivationLevel::ENABLED);
-
-  // Only reset the activation decision reason if we would have activated.
-  if (whitelisted && activation_decision_ == ActivationDecision::ACTIVATED) {
-    TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("loading"), "ActivationWhitelisted");
-    activation_decision_ = ActivationDecision::URL_WHITELISTED;
-    activation_options_ = Configuration::ActivationOptions();
-  }
-
-  if (activation_decision_ != ActivationDecision::ACTIVATED) {
-    DCHECK_EQ(activation_options_.activation_level, ActivationLevel::DISABLED);
-    return;
-  }
-
-  DCHECK_NE(activation_options_.activation_level, ActivationLevel::DISABLED);
-  ActivationState state = ActivationState(activation_options_.activation_level);
-  state.measure_performance = ShouldMeasurePerformanceForPageLoad(
-      activation_options_.performance_measurement_rate);
-  // TODO(csharrison): Set state.enable_logging based on metadata returns from
-  // the safe browsing filter, when it is available. Add tests for this
-  // behavior.
-  throttle_manager_->NotifyPageActivationComputed(navigation_handle, state);
-}
-
 void ContentSubresourceFilterDriverFactory::OnFirstSubresourceLoadDisallowed() {
   if (activation_options_.should_suppress_notifications)
     return;
   client_->ToggleNotificationVisibility(activation_options_.activation_level ==
                                         ActivationLevel::ENABLED);
 }
 
 void ContentSubresourceFilterDriverFactory::DidStartNavigation(
     content::NavigationHandle* navigation_handle) {
   if (navigation_handle->IsInMainFrame() &&
       !navigation_handle->IsSameDocument()) {
     activation_decision_ = ActivationDecision::UNKNOWN;
-    activation_list_matches_.clear();
     client_->ToggleNotificationVisibility(false);
   }
 }
 
 void ContentSubresourceFilterDriverFactory::DidFinishNavigation(
     content::NavigationHandle* navigation_handle) {
   if (navigation_handle->IsInMainFrame() &&
       !navigation_handle->IsSameDocument() &&
       activation_decision_ == ActivationDecision::UNKNOWN &&
       navigation_handle->HasCommitted()) {
     activation_decision_ = ActivationDecision::ACTIVATION_DISABLED;
     activation_options_ = Configuration::ActivationOptions();
   }
 }
 
-bool ContentSubresourceFilterDriverFactory::DidURLMatchActivationList(
-    const GURL& url,
-    ActivationList activation_list) const {
-  auto match_types =
-      activation_list_matches_.find(DistillURLToHostAndPath(url));
-  return match_types != activation_list_matches_.end() &&
-         match_types->second.find(activation_list) != match_types->second.end();
-}
-
-void ContentSubresourceFilterDriverFactory::AddActivationListMatch(
-    const GURL& url,
-    ActivationList match_type) {
-  if (match_type == ActivationList::NONE)
-    return;
-  if (url.has_host() && url.SchemeIsHTTPOrHTTPS())
-    activation_list_matches_[DistillURLToHostAndPath(url)].insert(match_type);
-}
-
 }  // namespace subresource_filter