Add variations filtering for is_low_end_device.

components/variations/service/variations_service.cc

 // Copyright (c) 2012 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/variations/service/variations_service.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <utility>
@@ skipping 614 matching lines @@
     const base::Version& version) {
   std::unique_ptr<ClientFilterableState> state =
       base::MakeUnique<ClientFilterableState>();
   state->locale = client_->GetApplicationLocale();
   state->reference_date = GetReferenceDateForExpiryChecks(local_state_);
   state->version = version;
   state->channel = GetChannelForVariations(client_->GetChannel());
   state->form_factor = GetCurrentFormFactor();
   state->platform = ClientFilterableState::GetCurrentPlatform();
   state->hardware_class = GetHardwareClass();
+#if defined(OS_ANDROID)
+  // This is set on Android only currently, because the IsLowEndDevice() API
+  // on other platforms has no intrinsic meaning outside of a field trial that
+  // controls its value. Since this is before server-side field trials are
+  // evaluated, that field trial would not be able to apply for this case.
+  state->is_low_end_device = base::SysInfo::IsLowEndDevice();
+#endif
   state->session_consistency_country = GetLatestCountry();
   state->permanent_consistency_country = LoadPermanentConsistencyCountry(
       version, state->session_consistency_country);
   return state;
 }
 
 void VariationsService::FetchVariationsSeed() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   const web_resource::ResourceRequestAllowedNotifier::State state =
@@ skipping 289 matching lines @@
 std::string VariationsService::GetLatestCountry() const {
   const std::string override_country =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kVariationsOverrideCountry);
   return !override_country.empty()
              ? override_country
              : local_state_->GetString(prefs::kVariationsCountry);
 }
 
 }  // namespace variations