Implemented clearing Java prefs after pulling variations first run seed from Java to C++ side

components/variations/variations_seed_store.cc

Index: components/variations/variations_seed_store.cc
diff --git a/components/variations/variations_seed_store.cc b/components/variations/variations_seed_store.cc
index 84dca7e3ce91341fab819cdd6a711b0d122de543..173579d26c76c0e8d1f7351d9424dadb951eb762 100644
--- a/components/variations/variations_seed_store.cc
+++ b/components/variations/variations_seed_store.cc
@@ -12,6 +12,7 @@
 #include "base/sha1.h"
 #include "base/strings/string_number_conversions.h"
 #include "components/compression/compression_utils.h"
+#include "components/variations/android/variations_seed_bridge.h"

[Alexei Svitkine (slow), 2015/11/12 22:27:31]

Put the header in an ifdef below since it won't build on other platforms
otherwise.

[Alexander Agulenko, 2015/11/12 23:43:39]

Done.

 #include "components/variations/pref_names.h"
 #include "components/variations/proto/variations_seed.pb.h"
 #include "crypto/signature_verifier.h"
@@ -464,6 +465,16 @@ bool VariationsSeedStore::StoreSeedDataNoDelta(
   // in M45+.
   local_state_->ClearPref(prefs::kVariationsSeed);
 
+#if defined(OS_ANDROID)
+  // If currently we do not have any stored pref then we mark seed storing as
+  // successful on the Java side of Chrome for Android to avoid repeated seed
+  // fetches and clear preferences on the Java side.
+  if (local_state_->GetString(prefs::kVariationsCompressedSeed).empty()) {
+    android::MarkVariationsSeedAsStored();
+    android::ClearJavaFirstRunPrefs();
+  }
+#endif
+
   // Update the saved country code only if one was returned from the server.
   // Prefer the country code that was transmitted in the header over the one in
   // the seed (which is deprecated).