Add support to previews/ for Server LoFi and LitePages

components/previews/core/previews_experiments.cc

Index: components/previews/core/previews_experiments.cc
diff --git a/components/previews/core/previews_experiments.cc b/components/previews/core/previews_experiments.cc
index e8d738aa60a6b5fb0c735ab700faf301582065a2..13bc5033913c669e487bbc1315588bf03a7230ce 100644
--- a/components/previews/core/previews_experiments.cc
+++ b/components/previews/core/previews_experiments.cc
@@ -4,8 +4,6 @@
 
 #include "components/previews/core/previews_experiments.h"
 
-#include <string>
-
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/field_trial_params.h"
@@ -128,7 +126,7 @@ base::TimeDelta OfflinePreviewFreshnessDuration() {
                          "offline_preview_freshness_duration_in_days", 7));
 }
 
-net::EffectiveConnectionType EffectiveConnectionTypeThresholdForOffline() {
+net::EffectiveConnectionType EffectiveConnectionTypeThreshold() {
   return GetParamValueAsECT(kClientSidePreviewsFieldTrial,
                             kEffectiveConnectionTypeThreshold,
                             net::EFFECTIVE_CONNECTION_TYPE_SLOW_2G);
@@ -152,11 +150,11 @@ bool IsClientLoFiEnabled() {
       base::CompareCase::SENSITIVE);
 }
 
-int ClientLoFiVersion() {
+int LoFiVersion() {
   return GetParamValueAsInt(kClientLoFiExperimentName, kVersion, 0);
 }
 
-net::EffectiveConnectionType EffectiveConnectionTypeThresholdForClientLoFi() {
+net::EffectiveConnectionType EffectiveConnectionTypeThresholdForLoFi() {
   return GetParamValueAsECT(kClientLoFiExperimentName,
                             kEffectiveConnectionTypeThreshold,
                             net::EFFECTIVE_CONNECTION_TYPE_2G);
@@ -173,4 +171,20 @@ bool IsIncludedInClientSidePreviewsExperimentsFieldTrial() {
       kEnabled, base::CompareCase::SENSITIVE);
 }
 
+std::string GetStringNameForType(PreviewsType type) {
+  switch (type) {
+    case PreviewsType::OFFLINE:
+      return "Offline";
+    case PreviewsType::LOFI:
+      return "LoFi";
+    case PreviewsType::LITE_PAGE:
+      return "LitePage";
+    case PreviewsType::NONE:
+    case PreviewsType::LAST:
+      break;
+  }
+  NOTREACHED();
+  return std::string();
+}
+
 }  // namespace previews