Revert of Modifications to layout test framework so that it can work with browser_tests.

Tools/Scripts/webkitpy/layout_tests/port/browser_test_driver.py

-# Copyright (C) 2014 Google Inc. All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the Google name nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-from webkitpy.layout_tests.port import driver
-import time
-import shutil
-
-
-class BrowserTestDriver(driver.Driver):
-    """Object for running print preview test(s) using browser_tests."""
-    def __init__(self, port, worker_number, pixel_tests, no_timeout=False):
-        """Invokes the constructor of driver.Driver."""
-        super(BrowserTestDriver, self).__init__(port, worker_number, pixel_tests, no_timeout)
-        self._stdin_directory = None
-
-    def start(self, pixel_tests, per_test_args, deadline):
-        """Same as Driver.start() however, it has an extra step. It waits for
-        a path to a file to be used for stdin to be printed by the browser test.
-        If a path is found by the deadline test test will open the file and
-        assign it to the stdin of the process that is owned by this driver's
-        server process.
-        """
-        # FIXME(ivandavid): Need to handle case where the layout test doesn't
-        # get a file name.
-        new_cmd_line = self.cmd_line(pixel_tests, per_test_args)
-        if not self._server_process or new_cmd_line != self._current_cmd_line:
-            self._start(pixel_tests, per_test_args)
-            self._run_post_start_tasks()
-            self._open_stdin_path(deadline)
-
-    # Gets the path of the directory that the file for stdin
-    # communication is in. Since the browser test cannot clean it
-    # up, the layout test framework will. Everything the browser test
-    # uses is stored in the same directory as the stdin file, so
-    # deleting that directory recursively will remove all the other
-    # temp data, like the printed pdf.
-    # Assumes that the correct file is sent, however if the path
-    # only contains one component, like '/foo' the the directory
-    # won't be deleted as it might be wrong.
-    def _open_stdin_path(self, deadline, test=False):
-        path, found = self._read_stdin_path(deadline)
-        if found:
-            if test == False:
-                self._server_process._proc.stdin = open(path, 'wb', 0)
-            path_split = path.split(self._port.TEST_PATH_SEPARATOR)
-            if len(path_split) > 2:
-                del path_split[-1]
-                self._stdin_directory = self._port.TEST_PATH_SEPARATOR.join(path_split)
-            else:
-                self._stdin_directory = path
-
-    def _read_stdin_path(self, deadline):
-        # return (stdin_path, bool)
-        block = self._read_block(deadline)
-        if block.stdin_path:
-            return (block.stdin_path, True)
-        return (None, False)
-
-    def cmd_line(self, pixel_tests, per_test_args):
-        """Command line arguments to run the browser test."""
-        cmd = self._command_wrapper(self._port.get_option('wrapper'))
-        cmd.append(self._port._path_to_driver())
-        cmd.append('--gtest_filter=PrintPreviewPdfGeneratedBrowserTest.MANUAL_LayoutTestDriver')
-        cmd.append('--run-manual')
-        cmd.append('--single_process')
-        cmd.extend(per_test_args)
-        cmd.extend(self._port.get_option('additional_drt_flag', []))
-        return cmd
-
-    def __del__(self):
-        if self._stdin_directory:
-            shutil.rmtree(self._stdin_directory, ignore_errors=True)