Introduce CrosBrowserWithOOBE, which exposes an oobe property.

tools/telemetry/telemetry/core/backends/chrome/cros_browser_finder.py

Index: tools/telemetry/telemetry/core/backends/chrome/cros_browser_finder.py
diff --git a/tools/telemetry/telemetry/core/backends/chrome/cros_browser_finder.py b/tools/telemetry/telemetry/core/backends/chrome/cros_browser_finder.py
index 2a790e5fa26df2f2e98a747dce5c2d4eb1258393..8d7a9e069e4ccdd43a1a7c43044f6bb31272a773 100644
--- a/tools/telemetry/telemetry/core/backends/chrome/cros_browser_finder.py
+++ b/tools/telemetry/telemetry/core/backends/chrome/cros_browser_finder.py
@@ -7,6 +7,7 @@ import logging
 
 from telemetry.core import browser
 from telemetry.core import possible_browser
+from telemetry.core.backends.chrome import cros_browser_with_oobe
 from telemetry.core.backends.chrome import cros_browser_backend
 from telemetry.core.backends.chrome import cros_interface
 from telemetry.core.platform import cros_platform_backend
@@ -32,13 +33,15 @@ class PossibleCrOSBrowser(possible_browser.PossibleBrowser):
       raise Exception("Profile generation is not currently supported on Chrome"
           " OS")
 
+    browser_options = self.finder_options.browser_options
     backend = cros_browser_backend.CrOSBrowserBackend(
-        self.browser_type, self.finder_options.browser_options,
-        self._cri, self._is_guest,
+        self.browser_type, browser_options, self._cri, self._is_guest,
         extensions_to_load=self.finder_options.extensions_to_load)
-    b = browser.Browser(backend,
-                        cros_platform_backend.CrosPlatformBackend(self._cri))
-    return b
+    platform = cros_platform_backend.CrosPlatformBackend(self._cri)
+    if browser_options.create_browser_with_oobe:
+      return cros_browser_with_oobe.CrOSBrowserWithOOBE(backend, platform)
+    else:
+      return browser.Browser(backend, platform)
 
   def SupportsOptions(self, finder_options):
     if (len(finder_options.extensions_to_load) != 0) and self._is_guest: