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

chrome/common/chrome_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 "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 204 matching lines @@
 // without having to restart the browser).
 const char kDebugDevToolsFrontend[]         = "debug-devtools-frontend";
 
 // Enables a frame context menu item that toggles the frame in and out of glass
 // mode (Windows Vista and up only).
 const char kDebugEnableFrameToggle[]        = "debug-enable-frame-toggle";
 
 // Enables support to debug printing subsystem.
 const char kDebugPrint[]                    = "debug-print";
 
+// The default device scale factor to use when computing a non-standard fixed
+// width based on the size of the window.
+const char kDefaultDeviceScaleFactor[]      = "default-device-scale-factor";
+
 // Specifies the URL at which to fetch configuration policy from the device
 // management backend. Specifying this switch turns on managed policy from the
 // device management backend.
 const char kDeviceManagementUrl[]           = "device-management-url";
 
 // Triggers a plethora of diagnostic modes.
 const char kDiagnostics[]                   = "diagnostics";
 
 // Replaces the audio IPC layer for <audio> and <video> with a mock audio
 // device, useful when using remote desktop or machines without sound cards.
@@ skipping 231 matching lines @@
 // Enables the extension activity UI.
 const char kEnableExtensionActivityUI[]     = "enable-extension-activity-ui";
 
 // Enables experimental timeline API.
 const char kEnableExtensionTimelineApi[]    = "enable-extension-timeline-api";
 
 // By default, cookies are not allowed on file://. They are needed for testing,
 // for example page cycler and layout tests. See bug 1157243.
 const char kEnableFileCookies[]             = "enable-file-cookies";
 
+// 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 HTTP pipelining. Attempt to pipeline HTTP connections. Heuristics will
 // try to figure out if pipelining can be used for a given host and request.
 // Without this flag, pipelining will never be used.
 const char kEnableHttpPipelining[]          = "enable-http-pipelining";
 
 // Enables the in-browser thumbnailing, which is more efficient than the
 // in-renderer thumbnailing, as we can use more information to determine if we
 // need to update thumbnails.
 const char kEnableInBrowserThumbnailing[]   = "enable-in-browser-thumbnailing";
 
@@ skipping 813 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches