[Chrome OS ECHO]: Rename API and method names

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 7b852c8ab067a208b535a67688352e5a23aea440..4274ac069870bf07c80594689920f72f5bcfec73 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -1268,9 +1268,9 @@ const char kLoginPassword[]                 = "login-password";
 // mode. Should completely disable extensions, sync and bookmarks.
 const char kGuestSession[]                  = "bwsi";
 
-// Enables overriding the path for the default offers component extension.
+// Enables overriding the path for the default echo component extension.
 // Useful for testing.
-const char kOffersExtensionPath[]           = "offers-ext-path";
+const char kEchoExtensionPath[]           = "echo-ext-path";
 
 // Show volume controls in status bar on ChromeOS.
 const char kShowVolumeStatus[]              = "show-volume-status";