Adding App, AndroidApp, AppBackend, AndroidAppBackend, PossibleApp.

tools/telemetry/telemetry/core/browser.py

Index: tools/telemetry/telemetry/core/browser.py
diff --git a/tools/telemetry/telemetry/core/browser.py b/tools/telemetry/telemetry/core/browser.py
index 600e26c96156389443e1ec3964eb1092f6fa6c78..0b24a0e5b6506eed80248ed10afe8c94180f4ac2 100644
--- a/tools/telemetry/telemetry/core/browser.py
+++ b/tools/telemetry/telemetry/core/browser.py
@@ -5,6 +5,7 @@
 import os
 
 from telemetry import decorators
+from telemetry.core import app
 from telemetry.core import browser_credentials
 from telemetry.core import exceptions
 from telemetry.core import extension_dict
@@ -16,7 +17,7 @@ from telemetry.core import wpr_server
 from telemetry.core.backends import browser_backend
 
 
-class Browser(object):
+class Browser(app.App):
   """A running browser instance that can be controlled in a limited way.
 
   To create a browser instance, use browser_finder.FindBrowser.
@@ -30,8 +31,8 @@ class Browser(object):
   def __init__(self, backend, platform_backend, archive_path,
                append_to_existing_wpr, make_javascript_deterministic,
                credentials_path):
-    assert platform_backend.platform != None
-
+    super(Browser, self).__init__(app_backend=backend,
+                                  platform_backend=platform_backend)
     self._browser_backend = backend
     self._platform_backend = platform_backend
     self._wpr_server = None
@@ -67,10 +68,6 @@ class Browser(object):
     self.Close()
 
   @property
-  def platform(self):
-    return self._platform_backend.platform
-
-  @property
   def browser_type(self):
     return self._browser_backend.browser_type