[Telemetry] Support downloading profiles from cloud storage

tools/telemetry/telemetry/core/possible_browser.py

Index: tools/telemetry/telemetry/core/possible_browser.py
diff --git a/tools/telemetry/telemetry/core/possible_browser.py b/tools/telemetry/telemetry/core/possible_browser.py
index 2d6ce66249e1f451bb46605d2b1729d1b5d3808a..07a0baa8ce9dd6e1c9772fb01f250e0d326d0b3d 100644
--- a/tools/telemetry/telemetry/core/possible_browser.py
+++ b/tools/telemetry/telemetry/core/possible_browser.py
@@ -7,8 +7,9 @@ class PossibleBrowser(object):
   Call Create() to launch the browser and begin manipulating it..
   """
 
-  def __init__(self, browser_type, finder_options):
+  def __init__(self, browser_type, target_os, finder_options):
     self._browser_type = browser_type
+    self._target_os = target_os
     self._finder_options = finder_options
 
   def __repr__(self):
@@ -19,6 +20,11 @@ class PossibleBrowser(object):
     return self._browser_type
 
   @property
+  def target_os(self):
+    """Target OS, the browser will run on."""
+    return self._target_os
+
+  @property
   def finder_options(self):
     return self._finder_options