Add app.window.alphaEnabled() and onAlphaEnabledChanged.

chrome/renderer/resources/extensions/app_window_custom_bindings.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Custom binding for the app_window API.
 
 var appWindowNatives = requireNative('app_window_natives');
 var runtimeNatives = requireNative('runtime');
 var Binding = require('binding').Binding;
 var Event = require('event_bindings').Event;
@@ skipping 223 matching lines @@
     };
     AppWindow.prototype.isMinimized = function() {
       return appWindowData.minimized;
     };
     AppWindow.prototype.isMaximized = function() {
       return appWindowData.maximized;
     };
     AppWindow.prototype.isAlwaysOnTop = function() {
       return appWindowData.alwaysOnTop;
     };
+    AppWindow.prototype.alphaEnabled = function() {
+      return appWindowData.alphaEnabled;
+    }
     AppWindow.prototype.handleWindowFirstShownForTests = function(callback) {
       // This allows test apps to get have their callback run even if they
       // call this after the first show has happened.
       if (this.firstShowHasHappened) {
         callback();
         return;
       }
       this.onWindowFirstShownForTests.addListener(callback);
     }
 
@@ skipping 40 matching lines @@
         minHeight: params.outerBounds.minHeight,
         maxWidth: params.outerBounds.maxWidth,
         maxHeight: params.outerBounds.maxHeight
       },
       fullscreen: params.fullscreen,
       minimized: params.minimized,
       maximized: params.maximized,
       alwaysOnTop: params.alwaysOnTop,
       hasFrameColor: params.hasFrameColor,
       activeFrameColor: params.activeFrameColor,
-      inactiveFrameColor: params.inactiveFrameColor
+      inactiveFrameColor: params.inactiveFrameColor,
+      alphaEnabled: params.alphaEnabled
     };
     currentAppWindow = new AppWindow;
   });
 });
 
 function boundsEqual(bounds1, bounds2) {
   if (!bounds1 || !bounds2)
     return false;
   return (bounds1.left == bounds2.left && bounds1.top == bounds2.top &&
           bounds1.width == bounds2.width && bounds1.height == bounds2.height);
@@ skipping 26 matching lines @@
     dispatchEventIfExists(currentWindow, "onFullscreened");
   if (!oldData.minimized && update.minimized)
     dispatchEventIfExists(currentWindow, "onMinimized");
   if (!oldData.maximized && update.maximized)
     dispatchEventIfExists(currentWindow, "onMaximized");
 
   if ((oldData.fullscreen && !update.fullscreen) ||
       (oldData.minimized && !update.minimized) ||
       (oldData.maximized && !update.maximized))
     dispatchEventIfExists(currentWindow, "onRestored");
+
+  if (oldData.alphaEnabled !== update.alphaEnabled)
+    dispatchEventIfExists(currentWindow, "onAlphaEnabledChanged");
 };
 
 function onAppWindowShownForTests() {
   if (!currentAppWindow)
     return;
 
   if (!currentAppWindow.firstShowHasHappened)
     dispatchEventIfExists(currentAppWindow, "onWindowFirstShownForTests");
 
   currentAppWindow.firstShowHasHappened = true;
@@ skipping 24 matching lines @@
       constraints[key] = 0;
   });
 
   currentWindowInternal.setSizeConstraints(boundsType, constraints);
 }
 
 exports.binding = appWindow.generate();
 exports.onAppWindowClosed = onAppWindowClosed;
 exports.updateAppWindowProperties = updateAppWindowProperties;
 exports.appWindowShownForTests = onAppWindowShownForTests;