Simplify the default browser infobar.

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index d4fd972a213407749a196207f008dc4a91168884..874224710ce1774f2171aaa79a4e3d4a478e027d 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -72,6 +72,7 @@
 #include "components/dom_distiller/core/distilled_page_prefs.h"
 #include "components/flags_ui/pref_service_flags_storage.h"
 #include "components/gcm_driver/gcm_channel_status_syncer.h"
+#include "components/metrics/metrics_service.h"
 #include "components/network_time/network_time_tracker.h"
 #include "components/ntp_snippets/ntp_snippets_service.h"
 #include "components/omnibox/browser/zero_suggest_provider.h"
@@ -249,6 +250,9 @@ const char kRestoreStartupURLsMigrationTime[] =
 // Deprecated 12/2015.
 const char kRestoreOnStartupMigrated[] = "session.restore_on_startup_migrated";
 
+// Deprecated 3/2016.
+const char kCheckDefaultBrowser[] = "browser.check_default_browser";
+
 #if defined(USE_AURA)
 // Deprecated 1/2016.
 const char kMaxSeparationForGestureTouchesInPixels[] =
@@ -587,6 +591,8 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterListPref(kURLsToRestoreOnStartupOld);
   registry->RegisterInt64Pref(kRestoreStartupURLsMigrationTime, 0);
   registry->RegisterBooleanPref(kRestoreOnStartupMigrated, false);
+
+  registry->RegisterBooleanPref(kCheckDefaultBrowser, true);
 }
 
 void RegisterUserProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
@@ -663,6 +669,20 @@ void MigrateObsoleteProfilePrefs(Profile* profile) {
   profile_prefs->ClearPref(kOverscrollHorizontalResistThreshold);
   profile_prefs->ClearPref(kOverscrollVerticalResistThreshold);
 #endif  // defined(USE_AURA)
+
+  // Added 3/2016.
+  if (!profile_prefs->GetBoolean(kCheckDefaultBrowser)) {
+    // Seed kDefaultBrowserLastDismissed with the install date.
+    metrics::MetricsService* metrics_service =
+        g_browser_process->metrics_service();
+    base::Time install_time =
+        metrics_service
+            ? base::Time::FromTimeT(metrics_service->GetInstallDate())
+            : base::Time::Now();
+    profile_prefs->SetInt64(prefs::kDefaultBrowserLastDismissed,
+                            install_time.ToInternalValue());
+  }
+  profile_prefs->ClearPref(kCheckDefaultBrowser);
 }
 
 }  // namespace chrome