[Telemetry] Reorganize everything.

tools/telemetry/telemetry/page_action.py

-# 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.
-
-class PageActionNotSupported(Exception):
-  pass
-
-class PageActionFailed(Exception):
-  pass
-
-class PageAction(object):
-  """Represents an action that a user might try to perform to a page."""
-  def __init__(self, attributes=None):
-    if attributes:
-      for k, v in attributes.iteritems():
-        setattr(self, k, v)
-
-  def CustomizeBrowserOptions(self, options):
-    """Override to add action-specific options to the BrowserOptions
-    object."""
-    pass
-
-  def WillRunAction(self, page, tab):
-    """Override to do action-specific setup before
-    Test.WillRunAction is called."""
-    pass
-
-  def RunAction(self, page, tab, previous_action):
-    raise NotImplementedError()
-
-  def RunsPreviousAction(self):
-    """Some actions require some initialization to be performed before the
-    previous action. For example, wait for href change needs to record the old
-    href before the previous action changes it. Therefore, we allow actions to
-    run the previous action. An action that does this should override this to
-    return True in order to prevent the previous action from being run twice."""
-    return False
-
-  def CleanUp(self, page, tab):
-    pass
-
-  def CanBeBound(self):
-    """If this class implements BindMeasurementJavaScript, override CanBeBound
-    to return True so that a benchmark knows it can bind measurements."""
-    return False
-
-  def BindMeasurementJavaScript(
-      self, tab, start_js, stop_js):  # pylint: disable=W0613
-    """Let this action determine when measurements should start and stop.
-
-    A benchmark or measurement can call this method to provide the action
-    with JavaScript code that starts and stops measurements. The action
-    determines when to execute the provided JavaScript code, for more accurate
-    timings.
-
-    Args:
-      tab: The tab to do everything on.
-      start_js: JavaScript code that starts measurements.
-      stop_js: JavaScript code that stops measurements.
-    """
-    raise Exception('This action cannot be bound.')