Compute pageScaleFactor on page so that fixed layout page fits width of window.

content/public/common/content_switches.cc

 // 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.
 
 #include "content/public/common/content_switches.h"
 
 namespace switches {
 
 // By default, file:// URIs cannot read other file:// URIs. This is an
 // override for developers who need the old behavior for testing.
@@ skipping 182 matching lines @@
      "enable-fixed-position-compositing";
 
 // Enable DNS side checking of certificates. Still experimental, should only
 // be used by developers at the current time.
 const char kEnableDNSCertProvenanceChecking[] =
      "enable-dns-cert-provenance-checking";
 
 // Enables device motion events.
 const char kEnableDeviceMotion[]            = "enable-device-motion";
 
+// By default, a page is laid out to fill the entire width of the window.
+// This flag fixes the layout of the page to a default of 980px.
+const char kEnableFixedLayout[]             = "enable-fixed-layout";
+
 // Enable the JavaScript Full Screen API.
 const char kDisableFullScreen[]             = "disable-fullscreen";
 
 // Enable the JavaScript Pointer Lock API.
 const char kEnablePointerLock[]             = "enable-pointer-lock";
 
 // Enable the Gamepad API
 const char kEnableGamepad[]                 = "enable-gamepad";
 
 // Enable the GPU plugin and Pepper 3D rendering.
@@ skipping 345 matching lines @@
 
 #if !defined(OFFICIAL_BUILD)
 // Causes the renderer process to throw an assertion on launch.
 const char kRendererCheckFalseTest[]        = "renderer-check-false-test";
 #endif
 
 // Enable per-tile page painting.
 const char kEnablePerTilePainting[]         = "enable-per-tile-painting";
 
 }  // namespace switches