Experimental viewport meta tag support for desktop

chrome/browser/chromeos/login/chrome_restart_request.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/chromeos/login/chrome_restart_request.h"
 
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "base/command_line.h"
@@ skipping 88 matching lines @@
       ::switches::kEnableGestureTapHighlight,
       ::switches::kDisableGestureTapHighlight,
       ::switches::kDisableGpuSandbox,
       ::switches::kEnableLogging,
       ::switches::kEnablePinch,
       ::switches::kEnableThreadedCompositing,
       ::switches::kEnableTouchDragDrop,
       ::switches::kEnableTouchEditing,
       ::switches::kEnableUniversalAcceleratedOverflowScroll,
       ::switches::kEnableViewport,
+      ::switches::kEnableViewportMeta,
+      ::switches::kScaleViewportOnResize,

[kenneth.r.christiansen, 2013/10/25 06:27:01]

It cannot always scale and will overflow. Not sure if we can find a better
wording.

Why can't this be used on desktop? I mean is it a problem when you make the view
bigger or smaller?

I think what you really want here is whether to apply the aspect-ratio scale
difference (if not restricted) between orientation changes. 

That is only related to some specific kind of resize.

kApplyViewportAspectRatioScaleDifference ?

[bokan, 2013/10/25 17:19:33]

On desktop, if viewport is enabled and we have this flag (it's currently
implicitly on), shrinking the window will resize the page so that we don't get
horizontal overflow since the page thinks we're changing orientation. This
happens even on pages without a viewport tag.

You're correct in that we're really after is to distinguish between these two
kinds of resizes. Alex suggested MainFrameResizesAreOrientationChanges. I think
it's more clear. 

       ::switches::kForceDeviceScaleFactor,
       ::switches::kGpuStartupDialog,
       ::switches::kGpuSandboxAllowSysVShm,
       ::switches::kMultiProfiles,
       ::switches::kNoSandbox,
       ::switches::kPpapiFlashArgs,
       ::switches::kPpapiFlashInProcess,
       ::switches::kPpapiFlashPath,
       ::switches::kPpapiFlashVersion,
       ::switches::kPpapiInProcess,
@@ skipping 242 matching lines @@
     // Relaunch chrome without session manager on dev box.
     ReLaunch(command_line);
     return;
   }
 
   // ChromeRestartRequest deletes itself after request sent to session manager.
   (new ChromeRestartRequest(command_line))->Start();
 }
 
 }  // namespace chromeos