Update references to the extension messaging APIs to point to the "runtime"

chrome/common/extensions/docs/templates/intros/privacy.html

Index: chrome/common/extensions/docs/templates/intros/privacy.html
diff --git a/chrome/common/extensions/docs/templates/intros/privacy.html b/chrome/common/extensions/docs/templates/intros/privacy.html
index c7657ea0640260e616330f798fd8369d3f8d3577..2a80ae579e0e1d18f60f5db4d0d862fd4d2501cc 100644
--- a/chrome/common/extensions/docs/templates/intros/privacy.html
+++ b/chrome/common/extensions/docs/templates/intros/privacy.html
@@ -73,10 +73,10 @@
 <pre>chrome.privacy.services.autofillEnabled.get({}, function(details) {
   if (details.levelOfControl === 'controllable_by_this_extension') {
     chrome.privacy.services.autofillEnabled.set({ value: true }, function() {
-      if (chrome.extension.lastError === undefined)
+      if (chrome.runtime.lastError === undefined)
         console.log("Hooray, it worked!");
       else
-        console.log("Sadness!", chrome.extension.lastError);
+        console.log("Sadness!", chrome.runtime.lastError);
     }
   }
 });</pre>
@@ -179,10 +179,10 @@
 <pre>chrome.privacy.services.autofillEnabled.get({}, function(details) {
   if (details.levelOfControl === 'controllable_by_this_extension') {
     chrome.privacy.services.autofillEnabled.set({ value: true }, function() {
-      if (chrome.extension.lastError === undefined)
+      if (chrome.runtime.lastError === undefined)
         console.log("Hooray, it worked!");
       else
-        console.log("Sadness!", chrome.extension.lastError);
+        console.log("Sadness!", chrome.runtime.lastError);
     }
   }
 });</pre>
@@ -206,4 +206,4 @@
 <p>
   For example code, see the
   <a href="samples.html#privacy">Privacy API samples</a>.
-</p>
+</p>