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

content/common/content_switches.cc

 // Copyright (c) 2011 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/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 147 matching lines @@
 
 // Enables WebKit accessibility within the renderer process.
 const char kEnableAccessibility[]           = "enable-accessibility";
 
 // Enables the benchmarking extensions.
 const char kEnableBenchmarking[]            = "enable-benchmarking";
 
 // 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 kEnableFullScreen[]              = "enable-fullscreen";
 
 // Enable the GPU plugin and Pepper 3D rendering.
 const char kEnableGPUPlugin[]               = "enable-gpu-plugin";
 
 // Force logging to be enabled.  Logging is disabled by default in release
 // builds.
 const char kEnableLogging[]                 = "enable-logging";
 
@@ skipping 295 matching lines @@
 // Specify the amount the trackpad should scroll by.
 const char kScrollPixels[]                  = "scroll-pixels";
 #endif
 
 #if !defined(OFFICIAL_BUILD)
 // Causes the renderer process to throw an assertion on launch.
 const char kRendererCheckFalseTest[]        = "renderer-check-false-test";
 #endif
 
 }  // namespace switches