[Chrome OS ECHO]: Rename API and method names

chrome/browser/chromeos/extensions/echo_private_apitest.cc

Index: chrome/browser/chromeos/extensions/echo_private_apitest.cc
diff --git a/chrome/browser/chromeos/extensions/offers_private_apitest.cc b/chrome/browser/chromeos/extensions/echo_private_apitest.cc
similarity index 55%
rename from chrome/browser/chromeos/extensions/offers_private_apitest.cc
rename to chrome/browser/chromeos/extensions/echo_private_apitest.cc
index 93db4982ba7317577c613380ad0f0d0642064ba1..25886d7ec9d99f0037b54616a4f4036fe643e989 100644
--- a/chrome/browser/chromeos/extensions/offers_private_apitest.cc
+++ b/chrome/browser/chromeos/extensions/echo_private_apitest.cc
@@ -4,10 +4,10 @@
 
 #include "chrome/browser/extensions/extension_apitest.h"
 
-class ExtensionOffersPrivateApiTest : public ExtensionApiTest {
+class ExtensionEchoPrivateApiTest : public ExtensionApiTest {
 };
 
-IN_PROC_BROWSER_TEST_F(ExtensionOffersPrivateApiTest, OffersTest) {
-  EXPECT_TRUE(RunComponentExtensionTest("offers/component_extension"))
+IN_PROC_BROWSER_TEST_F(ExtensionEchoPrivateApiTest, EchoTest) {
+  EXPECT_TRUE(RunComponentExtensionTest("echo/component_extension"))
       << message_;
 }