[chromedriver] Stop supporting chrome 26. Don't run tests against it.

chrome/test/chromedriver/test_expectations

Index: chrome/test/chromedriver/test_expectations
diff --git a/chrome/test/chromedriver/test_expectations b/chrome/test/chromedriver/test_expectations
index 3e76063bfb1d01f543fd2e90d30f5a25ba955999..1a04eacf48ed70c5ca5eec7a6dec85fbb08167f0 100644
--- a/chrome/test/chromedriver/test_expectations
+++ b/chrome/test/chromedriver/test_expectations
@@ -89,15 +89,6 @@ _REVISION_NEGATIVE_FILTER['HEAD'] = [
 ]
 _REVISION_NEGATIVE_FILTER['28'] = [] + _REVISION_NEGATIVE_FILTER['HEAD']
 _REVISION_NEGATIVE_FILTER['27'] = [] + _REVISION_NEGATIVE_FILTER['HEAD']
-_REVISION_NEGATIVE_FILTER['26'] = [
-    'AlertsTest.testHandlesTwoAlertsFromOneInteraction',
-    'AlertsTest.testShouldAllowAUserToSetTheValueOfAPrompt',
-    'UploadTest.testFileUploading',
-    'CorrectEventFiringTest.testUploadingFileShouldFireOnChangeEvent',
-    'FormHandlingTest.testShouldBeAbleToAlterTheContentsOfAFileUploadInputElement',
-    'FormHandlingTest.testShouldBeAbleToUploadTheSameFileTwice',
-    'FormHandlingTest.testShouldBeAbleToSendKeysToAFileUploadInputElementInAnXhtmlDocument',
-] + _REVISION_NEGATIVE_FILTER['HEAD']
 
 _OS_NEGATIVE_FILTER = {}
 _OS_NEGATIVE_FILTER['win'] = [