Add an explicit full-screen button.

remoting/webapp/fullscreen_v2.js

Index: remoting/webapp/fullscreen_v2.js
diff --git a/remoting/webapp/fullscreen_v2.js b/remoting/webapp/fullscreen_v2.js
index 6f6080d1b0830c3317ece143c8e5b8c5e1a6172b..afe2b4fb06f210ed8bf8ec45d0c4f3f59b251c4c 100644
--- a/remoting/webapp/fullscreen_v2.js
+++ b/remoting/webapp/fullscreen_v2.js
@@ -18,12 +18,6 @@ var remoting = remoting || {};
  */
 remoting.FullscreenAppsV2 = function() {
   /**
-   * @type {boolean} True if maximize/restore events are being hooked.
-   * @private
-   */
-  this.hookingWindowEvents_ = false;
-
-  /**
    * @type {boolean} True if the next onRestored event should cause callbacks
    *     to be notified of a full-screen changed event. onRestored fires when
    *     full-screen mode is exited and also when the window is restored from
@@ -47,8 +41,6 @@ remoting.FullscreenAppsV2 = function() {
 
   chrome.app.window.current().onFullscreened.addListener(
       this.onFullscreened_.bind(this));
-  chrome.app.window.current().onMaximized.addListener(
-      this.onMaximized_.bind(this));
   chrome.app.window.current().onRestored.addListener(
       this.onRestored_.bind(this));
 };
@@ -92,39 +84,14 @@ remoting.FullscreenAppsV2.prototype.removeListener = function(callback) {
   this.eventSource_.removeEventListener(this.kEventName_, callback);
 };
 
-remoting.FullscreenAppsV2.prototype.syncWithMaximize = function(sync) {
-  if (sync && chrome.app.window.current().isMaximized()) {
-    chrome.app.window.current().restore();
-    this.activate(true);
-  }
-  this.hookingWindowEvents_ = sync;
-};
-
 remoting.FullscreenAppsV2.prototype.onFullscreened_ = function() {
   this.notifyCallbacksOnRestore_ = true;
   this.eventSource_.raiseEvent(this.kEventName_, true);
   document.body.classList.add('fullscreen');
 };
 
-remoting.FullscreenAppsV2.prototype.onMaximized_ = function() {
-  if (this.hookingWindowEvents_) {
-    chrome.app.window.current().restore();
-    this.activate(true);
-  }
-};
-
 remoting.FullscreenAppsV2.prototype.onRestored_ = function() {
-  // TODO(jamiewalch): ChromeOS generates a spurious onRestore event if
-  // fullscreen() is called from an onMaximized handler (crbug.com/394819),
-  // so ignore the callback if the window is still full-screen.
-  if (this.isActive()) {
-    return;
-  }
-
   document.body.classList.remove('fullscreen');
-  if (this.hookingWindowEvents_) {
-    this.activate(false);
-  }
   if (this.notifyCallbacksOnRestore_) {
     this.notifyCallbacksOnRestore_ = false;
     this.eventSource_.raiseEvent(this.kEventName_, false);