[chromedriver] Re-enable window & screenshot tests on HEAD.

chrome/test/chromedriver/test/run_py_tests.py

Index: chrome/test/chromedriver/test/run_py_tests.py
diff --git a/chrome/test/chromedriver/test/run_py_tests.py b/chrome/test/chromedriver/test/run_py_tests.py
index c6c901c3b15d16a2f22b25cf34c5f2718e255ac7..49c0b2a96021f258f4654e913df683579c109ec3 100755
--- a/chrome/test/chromedriver/test/run_py_tests.py
+++ b/chrome/test/chromedriver/test/run_py_tests.py
@@ -73,13 +73,6 @@ _VERSION_SPECIFIC_FILTER = {}
 _VERSION_SPECIFIC_FILTER['HEAD'] = [
     # https://code.google.com/p/chromedriver/issues/detail?id=992
     'ChromeDownloadDirTest.testDownloadDirectoryOverridesExistingPreferences',
-    # https://bugs.chromium.org/p/chromedriver/issues/detail?id=1625
-    'ChromeDriverTest.testWindowMaximize',
-    'ChromeDriverTest.testWindowPosition',
-    'ChromeDriverTest.testWindowSize',
-    'ChromeExtensionsCapabilityTest.testCanInspectBackgroundPage',
-    'ChromeExtensionsCapabilityTest.testCanLaunchApp',
-    'MobileEmulationCapabilityTest.testDeviceMetricsWithStandardWidth',
     # https://bugs.chromium.org/p/chromedriver/issues/detail?id=1673
     'ChromeDownloadDirTest.testFileDownloadWithGet',
     'ChromeDriverPageLoadTimeoutTest.*',