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

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

Index: Tools/Scripts/webkitpy/layout_tests/port/driver.py
diff --git a/Tools/Scripts/webkitpy/layout_tests/port/driver.py b/Tools/Scripts/webkitpy/layout_tests/port/driver.py
index fda859e39504a2768fd9c4f1d080e9113edb698a..01118f6f3a6d40546448395fad9399fdc9486f95 100644
--- a/Tools/Scripts/webkitpy/layout_tests/port/driver.py
+++ b/Tools/Scripts/webkitpy/layout_tests/port/driver.py
@@ -150,7 +150,7 @@ class Driver(object):
         Returns a DriverOutput object.
         """
         start_time = time.time()
-        self.start(driver_input.should_run_pixel_test, driver_input.args)
+        self.start(driver_input.should_run_pixel_test, driver_input.args, int(driver_input.timeout))
         test_begin_time = time.time()
         self.error_from_test = str()
         self.err_seen_eof = False
@@ -265,7 +265,7 @@ class Driver(object):
             return True
         return False
 
-    def start(self, pixel_tests, per_test_args):
+    def start(self, pixel_tests, per_test_args, deadline=0):
         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)
@@ -415,6 +415,13 @@ class Driver(object):
             return (block.decoded_content, block.content_hash)
         return (None, block.content_hash)
 
+    def _read_stdin_path(self, deadline):
+        # returns (stdin_path, bool)
+        block = self._read_block(deadline)
+        if block.stdin_path:
+            return (block.stdin_path, True)
+        return (None, False)
+
     def _read_header(self, block, line, header_text, header_attr, header_filter=None):
         if line.startswith(header_text) and getattr(block, header_attr) is None:
             value = line.split()[1]
@@ -430,7 +437,8 @@ class Driver(object):
             or self._read_header(block, line, 'Content-Length: ', '_content_length', int)
             or self._read_header(block, line, 'ActualHash: ', 'content_hash')
             or self._read_header(block, line, 'DumpMalloc: ', 'malloc')
-            or self._read_header(block, line, 'DumpJSHeap: ', 'js_heap')):
+            or self._read_header(block, line, 'DumpJSHeap: ', 'js_heap')
+            or self._read_header(block, line, 'StdinPath', 'stdin_path')):
             return
         # Note, we're not reading ExpectedHash: here, but we could.
         # If the line wasn't a header, we just append it to the content.
@@ -507,6 +515,7 @@ class ContentBlock(object):
         self.decoded_content = None
         self.malloc = None
         self.js_heap = None
+        self.stdin_path = None
 
     def decode_content(self):
         if self.encoding == 'base64' and self.content is not None: