Android: renames pylib.constants.CHROME_DIR to DIR_SOURCE_ROOT.

build/android/pylib/instrumentation/test_runner.py

Index: build/android/pylib/instrumentation/test_runner.py
diff --git a/build/android/pylib/instrumentation/test_runner.py b/build/android/pylib/instrumentation/test_runner.py
index 1dc164c41c367f4fee169d10a8343ed4c2a87686..9e6e62e0b3a501881a377b06a0b16352d125b1d4 100644
--- a/build/android/pylib/instrumentation/test_runner.py
+++ b/build/android/pylib/instrumentation/test_runner.py
@@ -108,7 +108,7 @@ class TestRunner(base_test_runner.BaseTestRunner):
       dst_src = dest_host_pair.split(':',1)
       dst_layer = dst_src[0]
       host_src = dst_src[1]
-      host_test_files_path = constants.CHROME_DIR + '/' + host_src
+      host_test_files_path = constants.DIR_SOURCE_ROOT + '/' + host_src
       if os.path.exists(host_test_files_path):
         self.adb.PushIfNeeded(host_test_files_path,
                               self.adb.GetExternalStorage() + '/' +
@@ -144,7 +144,7 @@ class TestRunner(base_test_runner.BaseTestRunner):
     # because it may have race condition when multiple processes are trying to
     # launch lighttpd with same port at same time.
     http_server_ports = self.LaunchTestHttpServer(
-        os.path.join(constants.CHROME_DIR), self._lighttp_port)
+        os.path.join(constants.DIR_SOURCE_ROOT), self._lighttp_port)
     if self.ports_to_forward:
       port_pairs = [(port, port) for port in self.ports_to_forward]
       # We need to remember which ports the HTTP server is using, since the