GCD Private API: Change hardcoded code to 4 digits not 5.

BUG=417339

Review URL: https://codereview.chromium.org/597313002

Cr-Commit-Position: refs/heads/master@{#296998}

chrome/browser/local_discovery/privetv3_session.cc

@@ -16,7 +16,7 @@ namespace {
 
 const char kUrlPlaceHolder[] = "http://host/";
 
-const char kStubPrivetCode[] = "01234";
+const char kStubPrivetCode[] = "1234";
 
 GURL CreatePrivetURL(const std::string& path) {
   GURL url(kUrlPlaceHolder);

chrome/test/data/extensions/api_test/gcd_private/api/session.js

@@ -7,11 +7,11 @@ onload = function() {
     function session() {
       function onConfirmCode(sessionId, status, confirmationInfo) {
         chrome.test.assertEq("success", status);
-        chrome.test.assertEq("01234", confirmationInfo.code);
+        chrome.test.assertEq("1234", confirmationInfo.code);
         chrome.test.assertEq("displayCode", confirmationInfo.type);
 
         chrome.gcdPrivate.confirmCode(sessionId,
-                                      "01234",
+                                      "1234",
                                       onSessionEstablished.bind(null,
                                                                 sessionId));
       }

chrome/test/data/extensions/api_test/gcd_private/api/wifi_message.js

@@ -8,7 +8,7 @@ onload = function() {
       var messages_needed = 3;
       function onConfirmCode(sessionId, status, confirmation) {
         chrome.test.assertEq("success", status);
-        chrome.test.assertEq("01234", confirmation.code);
+        chrome.test.assertEq("1234", confirmation.code);
         chrome.gcdPrivate.confirmCode(sessionId,
                                       confirmation.code,
                                       onSessionEstablished.bind(null,