Do not load extension system in the Profile import process.

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 8ce4f47c52c09ddc0783adae8c59f1bfcfb02a02..3f2efe70005026e40f2bb7acdef20fa0dd023a22 100644
--- a/chrome/browser/first_run/first_run.cc
+++ b/chrome/browser/first_run/first_run.cc
@@ -561,6 +561,21 @@ void LogFirstRunMetric(FirstRunBubbleMetric metric) {
                             NUM_FIRST_RUN_BUBBLE_METRICS);
 }
 
+namespace {
+CommandLine* GetExtraArgumentsInstance() {
+  CR_DEFINE_STATIC_LOCAL(CommandLine, arguments, (CommandLine::NoProgram()));
+  return &arguments;
+}
+}  // namespace
+
+void SetExtraArgumentsForImportProcess(const CommandLine& arguments) {
+  GetExtraArgumentsInstance()->AppendArguments(arguments, false);
+}
+
+const CommandLine& GetExtraArgumentsForImportProcess() {
+  return *GetExtraArgumentsInstance();
+}
+
 // static
 void FirstRunBubbleLauncher::ShowFirstRunBubbleSoon() {
   SetShowFirstRunBubblePref(true);