Disable/enable echo for enterprise device.

chrome/browser/chromeos/extensions/echo_private_api.h

Index: chrome/browser/chromeos/extensions/echo_private_api.h
diff --git a/chrome/browser/chromeos/extensions/echo_private_api.h b/chrome/browser/chromeos/extensions/echo_private_api.h
index 8e813992e676cdbacabe45f7d9512701287e19ac..e4c79c0e83c0458451c8532964990a0ba562e1d4 100644
--- a/chrome/browser/chromeos/extensions/echo_private_api.h
+++ b/chrome/browser/chromeos/extensions/echo_private_api.h
@@ -34,4 +34,17 @@ class GetOobeTimestampFunction : public AsyncExtensionFunction {
   DECLARE_EXTENSION_FUNCTION("echoPrivate.getOobeTimestamp",
                              ECHOPRIVATE_GETOOBETIMESTAMP)
 };
+
+class IsEchoDisabledFunction : public SyncExtensionFunction {

[Mattias Nissler (ping if slow), 2013/02/04 09:06:19]

I don't see why this shouldn't better be named IsEchoEnabled?

[oscarpan, 2013/02/05 00:17:47]

Done.

+ public:
+  IsEchoDisabledFunction();
+
+ protected:
+  virtual ~IsEchoDisabledFunction();
+  virtual bool RunImpl() OVERRIDE;
+
+ private:
+  DECLARE_EXTENSION_FUNCTION("echoPrivate.isEchoDisabled",
+                             ECHOPRIVATE_ISECHODISABLED)
+};
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_ECHO_PRIVATE_API_H_