predictors: Enable origin learning with a flag.

chrome/browser/predictors/resource_prefetch_common_unittest.cc

Index: chrome/browser/predictors/resource_prefetch_common_unittest.cc
diff --git a/chrome/browser/predictors/resource_prefetch_common_unittest.cc b/chrome/browser/predictors/resource_prefetch_common_unittest.cc
index 56e12037e4129a6fd3d0c8d870f9364816b09bf0..3448b97fb23aa63ac1e2c114f532536dc39d54a8 100644
--- a/chrome/browser/predictors/resource_prefetch_common_unittest.cc
+++ b/chrome/browser/predictors/resource_prefetch_common_unittest.cc
@@ -73,7 +73,7 @@ class ResourcePrefetchCommonTest : public testing::Test {
     EXPECT_FALSE(config.IsSmallDBEnabledForTest());
     EXPECT_FALSE(config.is_url_learning_enabled);
     EXPECT_FALSE(config.is_manifests_enabled);
-    EXPECT_FALSE(config.is_origin_prediction_enabled);
+    EXPECT_FALSE(config.is_origin_learning_enabled);
     EXPECT_GT(config.min_resource_hits_to_trigger_prefetch, 1U);
   }
 
@@ -162,6 +162,19 @@ TEST_F(ResourcePrefetchCommonTest, EnableManifests) {
   EXPECT_TRUE(config.is_manifests_enabled);
 }
 
+TEST_F(ResourcePrefetchCommonTest, EnableOriginPrediction) {

[alexilin, 2017/04/13 09:01:21]

nit:
s/EnableOriginPrediction/EnableOriginLearning

[Benoit L, 2017/04/13 09:15:51]

Done.

+  variations::testing::VariationParamsManager params_manager(
+      "dummy-trial",
+      {{kModeParamName, kLearningMode},
+       {kEnableOriginLearningParamName, "true"}},
+      {kSpeculativeResourcePrefetchingFeatureName});
+
+  ResourcePrefetchPredictorConfig config;
+  EXPECT_TRUE(IsSpeculativeResourcePrefetchingEnabled(profile_.get(), &config));
+  EXPECT_TRUE(config.IsLearningEnabled());

[alexilin, 2017/04/13 09:01:21]

nit:
Change this line with `TestIsPrefetchLearning(config);` just to be consistent

[Benoit L, 2017/04/13 09:15:51]

Done.

+  EXPECT_TRUE(config.is_origin_learning_enabled);
+}
+
 // Verifies whether prefetching is disabled according to the network type. But
 // learning should not be disabled by network.
 TEST_F(ResourcePrefetchCommonTest, RespectsNetworkSettings) {