Android: start upstreaming some of our perf tests.

tools/chrome_remote_control/chrome_remote_control/browser.py

Index: tools/chrome_remote_control/chrome_remote_control/browser.py
diff --git a/tools/chrome_remote_control/chrome_remote_control/browser.py b/tools/chrome_remote_control/chrome_remote_control/browser.py
index 82db1222f7fa112341900e86528d5a3c38877701..df22eabe53bda30e4177287e2762332bb2eacdb1 100644
--- a/tools/chrome_remote_control/chrome_remote_control/browser.py
+++ b/tools/chrome_remote_control/chrome_remote_control/browser.py
@@ -19,10 +19,11 @@ class Browser(object):
     with browser_to_create.Create() as browser:
       ... do all your operations on browser here
   """
-  def __init__(self, backend):
+  def __init__(self, backend, platform):
     self._backend = backend
     self._http_server = None
     self._wpr_server = None
+    self._platform = platform
     self.credentials = browser_credentials.BrowserCredentials()
 
   def __enter__(self):
@@ -40,6 +41,10 @@ class Browser(object):
   def num_tabs(self):
     return self._backend.num_tabs
 
+  @property
+  def platform(self):
+    return self._platform
+
   def GetNthTabUrl(self, index):
     return self._backend.GetNthTabUrl(index)