Remove extension automation support that was used only by CEEE.

chrome/test/automation/automation_proxy.cc

Index: chrome/test/automation/automation_proxy.cc
diff --git a/chrome/test/automation/automation_proxy.cc b/chrome/test/automation/automation_proxy.cc
index 4d8f7a2078f86d6c9bec9ffb59e460deac859e36..637dc52db267c04396cd6b3daa06b6c8841ce65c 100644
--- a/chrome/test/automation/automation_proxy.cc
+++ b/chrome/test/automation/automation_proxy.cc
@@ -255,11 +255,6 @@ void AutomationProxy::EnsureExtensionTestResult() {
   ASSERT_TRUE(result) << "Extension test message: " << message;
 }
 
-bool AutomationProxy::GetEnabledExtensions(
-    std::vector<FilePath>* extension_directories) {
-  return Send(new AutomationMsg_GetEnabledExtensions(extension_directories));
-}
-
 bool AutomationProxy::GetBrowserWindowCount(int* num_windows) {
   if (!num_windows) {
     NOTREACHED();