Basic framework for devtools-based scrolling 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
new file mode 100644
index 0000000000000000000000000000000000000000..f7ba1b9f0f3de9d4bfa67ebe05ac1c9501b14dbe
--- /dev/null
+++ b/tools/chrome_remote_control/chrome_remote_control/browser.py
@@ -0,0 +1,44 @@
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+import os as real_os
+import sys as real_sys
+import subprocess as real_subprocess
+import urllib2
+import json
+import tab
+
+import browser_finder
+
+class Browser(object):
+  """A running browser instance that can be controled in a limited way.
+
+  To create a browser instance, use browser_finder.FindBestPossibleBrowser.
+
+  Be sure to clean up after yourself by calling Close() when you are done with
+  the browser. Or better yet:
+    browser_to_create = FindBestPossibleBrowser(options)
+    with browser_to_create.Create() as browser:
+      ... do all your operations on browser here
+  """
+  def __init__(self, backend):
+    self._backend = backend
+
+  def __enter__(self):
+    return self
+
+  def __exit__(self, *args):
+    self.Close()

[dtu, 2012/08/27 22:27:27]

Makes more sense in __del__, so it'll take effect for all instances, not just
those in with statements.

[nduca, 2012/08/28 00:20:16]

Remember, __del__ is tied to when GC runs, not when the object is deleted.

I'm pretty sure that the with/enter/exit/close idiom is the correct one to use
here. browser objects are closer to files than they are to regular objects.
Their shutdown is explicit, not something you want to be at the mercy of the
garbage collector. E.g. you dont want the third loop through a test to suddenly
kill an old browser instance.

+
+  @property
+  def num_tabs(self):
+    return self._backend.num_tabs
+
+  def GetNthTabURL(self, index):
+    return self._backend.GetNthTabURL(index)
+
+  def ConnectToNthTab(self, index):
+    return self._backend.ConnectToNthTab(index)
+
+  def Close(self):
+    self._backend.Close()