Added experiments section and exported the list of SafeBrowsing features in WebUI

components/safe_browsing/features.cc

Index: components/safe_browsing/features.cc
diff --git a/components/safe_browsing/features.cc b/components/safe_browsing/features.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c8f28e2bf0336dda18b05bbd0812c962e096b21b
--- /dev/null
+++ b/components/safe_browsing/features.cc
@@ -0,0 +1,59 @@
+// Copyright (c) 2017 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/safe_browsing/features.h"

[Jialiu Lin, 2017/07/06 23:58:27]

nit: empty line 

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

+#include <stddef.h>
+#include <algorithm>
+#include <utility>

[vakh (use Gerrit instead), 2017/07/07 00:23:40]

The overall structure of the file could be like this:

namespace safe_browsing {

const base::Feature
const base::Feature
const base::Feature

namespace {
  ExperimentalFeaturesList
  AddFeatureAndAvailability()
}  // namespace

  GetFeatureStatusList() or GetTrueParametersList()

}  // namespace safe_browsing

[hkamila, 2017/07/07 01:29:48]

Acknowledged.

+#include <vector>
+#include "base/feature_list.h"

[Jialiu Lin, 2017/07/06 23:58:27]

nit:empty line 

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

+#include "base/macros.h"
+#include "base/values.h"
+

[Jialiu Lin, 2017/07/06 23:58:27]

safe_browsing namespace?

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

+// Add your experimental features list. Please add your features to the vector

[vakh (use Gerrit instead), 2017/07/07 00:23:40]

A more descriptive comment would be useful here. Something along the lines of:

Please define any new SafeBrowsing related features in this file and add them to
the ExperimentalFeaturesList below to start displaying their status on the
chrome://safe-browsing page.

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

+// ExperimentalFeaturesListbelow as well.

[vakh (use Gerrit instead), 2017/07/07 00:23:40]

ExperimentalFeaturesList below

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

+const base::Feature kLocalDatabaseManagerEnabled{
+    "SafeBrowsingV4LocalDatabaseManagerEnabled",
+    base::FEATURE_DISABLED_BY_DEFAULT};
+
+const base::Feature kV4OnlyEnabled{"SafeBrowsingV4OnlyEnabled",
+                                   base::FEATURE_DISABLED_BY_DEFAULT};
+// This Feature specifies which non-resource HTML Elements to collect based on
+// their tag and attributes. It's a single param containing a comma-separated
+// list of pairs. For example: "tag1,id,tag1,height,tag2,foo" - this will
+// collect elements with tag "tag1" that have attribute "id" or "height" set,
+// and elements of tag "tag2" if they have attribute "foo" set. All tag names
+// and attributes should be lower case.
+const base::Feature kThreatDomDetailsTagAndAttributeFeature{
+    "ThreatDomDetailsTagAttributes", base::FEATURE_DISABLED_BY_DEFAULT};
+base::ListValue paramList;

[vakh (use Gerrit instead), 2017/07/07 00:23:40]

Let's not use global variables :)

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

+
+// List of experimental features. Boolean value for each list member should be
+// set to True if the experiment is currently running at a probability other
+// than 1 or 0, or to False otherwise.
+std::vector<std::pair<const base::Feature*, bool>> ExperimentalFeaturesList = {
+    std::make_pair(&kLocalDatabaseManagerEnabled, true),
+    std::make_pair(&kV4OnlyEnabled, true),
+    std::make_pair(&kThreatDomDetailsTagAndAttributeFeature, true)};
+
+// Method function for adding the name of the feature and deciding if

[vakh (use Gerrit instead), 2017/07/07 00:23:40]

Adds the name and the enabled/disabled status of a given feature.

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

+// a feature is enabled or disabled.
+void AddFeatureAndAvailability(const base::Feature* expFeature) {
+  paramList.GetList().push_back(base::Value(expFeature->name));
+  if (base::FeatureList::IsEnabled(*expFeature)) {
+    paramList.GetList().push_back(base::Value("Enabled"));
+  } else {
+    paramList.GetList().push_back(base::Value("Disabled"));
+  }
+}
+
+// Returns the list of the experimental features that are enabled or disabled,
+// as part of currently running Safe Browsing experiments.
+base::ListValue GetTrueParametersList() {

[vakh (use Gerrit instead), 2017/07/07 00:23:40]

rename suggestion: GetFeatureStatusList()

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

+  for (unsigned int i = 0; i < ExperimentalFeaturesList.size(); i++) {

[vakh (use Gerrit instead), 2017/07/07 00:23:40]

why not use iterator instead?

[hkamila, 2017/07/07 01:29:49]

Acknowledged.

+    if (ExperimentalFeaturesList[i].second == true) {

[vakh (use Gerrit instead), 2017/07/07 00:23:40]

if (ExperimentalFeaturesList[i].second)

[hkamila, 2017/07/07 01:29:48]

Acknowledged.

+      AddFeatureAndAvailability(ExperimentalFeaturesList[i].first);
+    }
+  }
+  return paramList;
+}