Remove --disable-fullscreen-within-tab command-line flag.

chrome/browser/ui/fullscreen/fullscreen_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_FULLSCREEN_FULLSCREEN_CONTROLLER_H_
 #define CHROME_BROWSER_UI_FULLSCREEN_FULLSCREEN_CONTROLLER_H_
 
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 20 matching lines @@
 // implications for how the contents of the tab render (eg: a video element may
 // grow to consume the whole tab), whereas browser fullscreen mode doesn't.
 // Therefore if a user forces an exit from tab fullscreen, we need to notify the
 // tab so it can stop rendering in its fullscreen mode.
 //
 // For Flash, FullscreenController will auto-accept all permission requests for
 // fullscreen and/or mouse lock, since the assumption is that the plugin handles
 // this for us.
 //
 // FullscreenWithinTab Note:
-// When the browser is configured as such, all fullscreen widgets are displayed
-// within the tab contents area, and FullscreenController will expand the
-// browser window so that the tab contents area fills the entire
-// screen. However, special behavior applies when a tab is being
-// screen-captured. First, the browser window will not be fullscreened. This
-// allows the user to retain control of their desktop to work in other browser
-// tabs or applications while the fullscreen view is displayed on a remote
-// screen. Second, FullscreenController will auto-resize fullscreen widgets to
-// that of the capture video resolution when they are hidden (e.g., when a user
-// has switched to another tab). This is both a performance and quality
-// improvement since scaling and letterboxing steps can be skipped in the
-// capture pipeline.
+// All fullscreen widgets are displayed within the tab contents area, and
+// FullscreenController will expand the browser window so that the tab contents
+// area fills the entire screen. However, special behavior applies when a tab is
+// being screen-captured. First, the browser window will not be
+// fullscreened. This allows the user to retain control of their desktop to work
+// in other browser tabs or applications while the fullscreen view is displayed
+// on a remote screen. Second, FullscreenController will auto-resize fullscreen
+// widgets to that of the capture video resolution when they are hidden (e.g.,
+// when a user has switched to another tab). This is both a performance and
+// quality improvement since scaling and letterboxing steps can be skipped in
+// the capture pipeline.
 
 // This class implements fullscreen and mouselock behaviour.
 class FullscreenController : public content::NotificationObserver {
  public:
   explicit FullscreenController(Browser* browser);
   virtual ~FullscreenController();
 
   // Browser/User Fullscreen ///////////////////////////////////////////////////
 
   // Returns true if the window is currently fullscreen and was initially
@@ skipping 131 matching lines @@
 
   // Make the current tab exit fullscreen mode or mouse lock if it is in it.
   void ExitTabFullscreenOrMouseLockIfNecessary();
   void UpdateFullscreenExitBubbleContent();
 
   ContentSetting GetFullscreenSetting(const GURL& url) const;
   ContentSetting GetMouseLockSetting(const GURL& url) const;
 
   bool IsPrivilegedFullscreenForTab() const;
   void SetPrivilegedFullscreenForTesting(bool is_privileged);
-  // Returns true if fullscreen-within-tab has been enabled for the
-  // |browser_|. See 'FullscreenWithinTab Note'.
-  bool IsFullscreenWithinTabPossible() const;
   // Returns true if |web_contents| was toggled into/out of fullscreen mode as a
   // screen-captured tab. See 'FullscreenWithinTab Note'.
   bool MaybeToggleFullscreenForCapturedTab(content::WebContents* web_contents,
                                            bool enter_fullscreen);
   // Returns true if |web_contents| is in fullscreen mode as a screen-captured
   // tab. See 'FullscreenWithinTab Note'.
   bool IsFullscreenForCapturedTab(const content::WebContents* web_contents)
       const;
   void UnlockMouse();
 
@@ skipping 42 matching lines @@
   // Used in testing to confirm proper behavior for specific, privileged
   // fullscreen cases.
   bool is_privileged_fullscreen_for_testing_;
 
   base::WeakPtrFactory<FullscreenController> ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FullscreenController);
 };
 
 #endif  // CHROME_BROWSER_UI_FULLSCREEN_FULLSCREEN_CONTROLLER_H_