[cros] Fake a stub user login when no --login-manager and --login-user are given.

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index c319ebc90010ebda849abc6144ac097b06c06e97..b877e683b08a4dda774211488ba6d1fe7889cbfb 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -78,6 +78,13 @@
 #include "net/base/network_change_notifier.h"
 #include "net/url_request/url_request.h"
 
+namespace {
+
+// Username for stub login when not running on ChromeOS.
+const char kStubUsername[] = "stub-user@example.com";
+
+}
+
 class MessageLoopObserver : public MessageLoopForUI::Observer {
   virtual base::EventStatus WillProcessEvent(
       const base::NativeEvent& event) OVERRIDE {
@@ -229,14 +236,32 @@ ChromeBrowserMainPartsChromeos::~ChromeBrowserMainPartsChromeos() {
 // content::BrowserMainParts and ChromeBrowserMainExtraParts overrides ---------
 
 void ChromeBrowserMainPartsChromeos::PreEarlyInitialization() {
+  CommandLine* singleton_command_line = CommandLine::ForCurrentProcess();
+
   if (parsed_command_line().HasSwitch(switches::kGuestSession)) {
     // Disable sync and extensions if we're in "browse without sign-in" mode.
-    CommandLine* singleton_command_line = CommandLine::ForCurrentProcess();
     singleton_command_line->AppendSwitch(switches::kDisableSync);
     singleton_command_line->AppendSwitch(switches::kDisableExtensions);
     browser_defaults::bookmarks_enabled = false;
   }
 
+  // If we're not running on ChromeOS, and are not showing the login manager

[Nikita (slow), 2012/06/20 13:28:32]

nit: Should be "If we're not running on real ChromeOS hardware / CrOS VM image"
i.e. either build executed on dev workstation or Chromium buildbot.

[Ivan Korotkov, 2012/06/21 12:25:12]

Done.

+  // or attempting a command line login, login with a stub user.
+  if (!base::chromeos::IsRunningOnChromeOS() &&
+      !parsed_command_line().HasSwitch(switches::kLoginManager) &&
+      !parsed_command_line().HasSwitch(switches::kLoginUser) &&
+      !parsed_command_line().HasSwitch(switches::kGuestSession)) {
+    singleton_command_line->AppendSwitchASCII(switches::kLoginUser,
+                                              kStubUsername);
+    if (!parsed_command_line().HasSwitch(switches::kLoginProfile)) {
+      singleton_command_line->AppendSwitchASCII(
+          switches::kLoginProfile, ProfileManager::kTestUserProfile);
+    }
+    LOG(INFO) << "Running as stub user with profile dir: "
+              << singleton_command_line->GetSwitchValuePath(
+                     switches::kLoginProfile).value();
+  }
+
   ChromeBrowserMainPartsLinux::PreEarlyInitialization();
 }