autotest: Remove is_component from ChromeDriver.

BUG=chromium:654525
TEST=trybots

Change-Id: Ic1ca52cddfcd0fd4c80faf1f3c0002733e12ff8d
Reviewed-on: https://chromium-review.googlesource.com/412122
Commit-Ready: Achuith Bhandarkar <achuith@chromium.org>
Tested-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
diff --git a/client/common_lib/cros/chromedriver.py b/client/common_lib/cros/chromedriver.py
index 7971f6c..1b0f8b1 100644
--- a/client/common_lib/cros/chromedriver.py
+++ b/client/common_lib/cros/chromedriver.py
@@ -28,9 +28,9 @@
     """Wrapper class, a context manager type, for tests to use Chrome Driver."""
 
     def __init__(self, extra_chrome_flags=[], subtract_extra_chrome_flags=[],
-                 extension_paths=[], is_component=True, username=None,
-                 password=None, server_port=None, skip_cleanup=False,
-                 url_base=None, extra_chromedriver_args=None, *args, **kwargs):
+                 extension_paths=[], username=None, password=None,
+                 server_port=None, skip_cleanup=False, url_base=None,
+                 extra_chromedriver_args=None, *args, **kwargs):
         """Initialize.
 
         @param extra_chrome_flags: Extra chrome flags to pass to chrome, if any.
@@ -38,7 +38,6 @@
                 chrome by chromedriver, if any.
         @param extension_paths: A list of paths to unzipped extensions. Note
                                 that paths to crx files won't work.
-        @param is_component: True if the manifest.json has a key.
         @param username: Log in using this username instead of the default.
         @param password: Log in using this password instead of the default.
         @param server_port: Port number for the chromedriver server. If None,
@@ -55,7 +54,6 @@
 
         # Log in with telemetry
         self._chrome = chrome.Chrome(extension_paths=extension_paths,
-                                     is_component=is_component,
                                      username=username,
                                      password=password,
                                      extra_browser_args=extra_chrome_flags)