Refactor preference syncing.

chrome/browser/first_run/first_run.cc

Index: chrome/browser/first_run/first_run.cc
diff --git a/chrome/browser/first_run/first_run.cc b/chrome/browser/first_run/first_run.cc
index f06f707d4d02a83fa3ee5e6d75afca8336ee36bc..dc42902fa5f4d8e3b41f17921a324b7bc00cd740 100644
--- a/chrome/browser/first_run/first_run.cc
+++ b/chrome/browser/first_run/first_run.cc
@@ -363,7 +363,9 @@ bool FirstRun::SetShowFirstRunBubblePref(bool show_bubble) {
   if (!local_state)
     return false;
   if (!local_state->FindPreference(prefs::kShouldShowFirstRunBubble)) {
-    local_state->RegisterBooleanPref(prefs::kShouldShowFirstRunBubble, false);
+    local_state->RegisterBooleanPref(prefs::kShouldShowFirstRunBubble,
+                                     false,
+                                     false /* don't sync pref */);
     local_state->SetBoolean(prefs::kShouldShowFirstRunBubble, show_bubble);
   }
   return true;
@@ -375,7 +377,9 @@ bool FirstRun::SetShowWelcomePagePref() {
   if (!local_state)
     return false;
   if (!local_state->FindPreference(prefs::kShouldShowWelcomePage)) {
-    local_state->RegisterBooleanPref(prefs::kShouldShowWelcomePage, false);
+    local_state->RegisterBooleanPref(prefs::kShouldShowWelcomePage,
+                                     false,
+                                     false /* don't sync pref */);
     local_state->SetBoolean(prefs::kShouldShowWelcomePage, true);
   }
   return true;
@@ -389,7 +393,9 @@ bool FirstRun::SetPersonalDataManagerFirstRunPref() {
   if (!local_state->FindPreference(
           prefs::kAutofillPersonalDataManagerFirstRun)) {
     local_state->RegisterBooleanPref(
-        prefs::kAutofillPersonalDataManagerFirstRun, false);
+        prefs::kAutofillPersonalDataManagerFirstRun,
+        false,
+        false /* don't sync pref */);
     local_state->SetBoolean(prefs::kAutofillPersonalDataManagerFirstRun, true);
   }
   return true;
@@ -402,7 +408,8 @@ bool FirstRun::SetOEMFirstRunBubblePref() {
     return false;
   if (!local_state->FindPreference(prefs::kShouldUseOEMFirstRunBubble)) {
     local_state->RegisterBooleanPref(prefs::kShouldUseOEMFirstRunBubble,
-                                     false);
+                                     false,
+                                     false /* don't sync pref */);
     local_state->SetBoolean(prefs::kShouldUseOEMFirstRunBubble, true);
   }
   return true;
@@ -415,7 +422,8 @@ bool FirstRun::SetMinimalFirstRunBubblePref() {
     return false;
   if (!local_state->FindPreference(prefs::kShouldUseMinimalFirstRunBubble)) {
     local_state->RegisterBooleanPref(prefs::kShouldUseMinimalFirstRunBubble,
-                                     false);
+                                     false,
+                                     false /* don't sync pref */);
     local_state->SetBoolean(prefs::kShouldUseMinimalFirstRunBubble, true);
   }
   return true;