<webview>: Move UserAgentOverride to Stable

chrome/renderer/resources/extensions/web_view.js

Index: chrome/renderer/resources/extensions/web_view.js
diff --git a/chrome/renderer/resources/extensions/web_view.js b/chrome/renderer/resources/extensions/web_view.js
index f8ae2cb7dc27889a51297212f8a9b128b100937c..3707a636bc57af826a094dfbf7ae12574a7abccd 100644
--- a/chrome/renderer/resources/extensions/web_view.js
+++ b/chrome/renderer/resources/extensions/web_view.js
@@ -915,6 +915,28 @@ WebViewInternal.prototype.setupWebRequestEvents_ = function() {
   );
 };
 
+/** @private */
+WebViewInternal.prototype.getUserAgent_ = function() {
+  return this.userAgentOverride_ || navigator.userAgent;
+};
+
+/** @private */
+WebViewInternal.prototype.isUserAgentOverridden_ = function() {
+  return !!this.userAgentOverride_ &&
+      this.userAgentOverride_ != navigator.userAgent;
+};
+
+/** @private */
+WebViewInternal.prototype.setUserAgentOverride_ = function(userAgentOverride) {
+  this.userAgentOverride_ = userAgentOverride;
+  if (!this.instanceId_) {
+    // If we are not attached yet, then we will pick up the user agent on
+    // attachment.
+    return;
+  }
+  WebView.overrideUserAgent(this.instanceId_, userAgentOverride);
+};
+
 // Registers browser plugin <object> custom element.
 function registerBrowserPluginElement() {
   var proto = Object.create(HTMLObjectElement.prototype);
@@ -1010,6 +1032,18 @@ function registerWebViewElement() {
     var internal = this.internal_(secret);
     $Function.apply(internal.insertCSS_, internal, arguments);
   };
+
+  proto.getUserAgent = function() {
+    return this.internal_(secret).getUserAgent_();
+  };
+
+  proto.isUserAgentOverridden = function() {
+    return this.internal_(secret).isUserAgentOverridden_();
+  };
+
+  proto.setUserAgentOverride = function(userAgentOverride) {
+    this.internal_(secret).setUserAgentOverride_(userAgentOverride);
+  };
   WebViewInternal.maybeRegisterExperimentalAPIs(proto, secret);
 
   window.WebView =