Add debugging flag --simulate-touch-screen-with-mouse.

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 547 matching lines @@
 // layer compositing.
 const char kShowCompositedLayerTree[]       = "show-composited-layer-tree";
 
 // Draws a FPS indicator
 const char kShowFPSCounter[]                = "show-fps-counter";
 
 // Visibly render a border around paint rects in the web page to help debug
 // and study painting behavior.
 const char kShowPaintRects[]                = "show-paint-rects";
 
+// Map mouse input events into touch gesture events.  Useful for debugging touch
+// gestures without needing a touchscreen.
+const char kSimulateTouchScreenWithMouse[]  =
+    "simulate-touch-screen-with-mouse";
+
 // Runs the renderer and plugins in the same process as the browser
 const char kSingleProcess[]                 = "single-process";
 
 // Skip gpu info collection, blacklist loading, and blacklist auto-update
 // scheduling at browser startup time.
 // Therefore, all GPU features are available, and about:gpu page shows empty
 // content. The switch is intended only for tests.
 const char kSkipGpuDataLoading[]            = "skip-gpu-data-loading";
 
 // Runs the security test for the renderer sandbox.
@@ skipping 120 matching lines @@
 // Sets the width and height above which a composited layer will get tiled.
 const char kMaxUntiledLayerWidth[]          = "max-untiled-layer-width";
 const char kMaxUntiledLayerHeight[]         = "max-untiled-layer-height";
 
 const char kEnableFixedPositionCreatesStackingContext[]
     = "enable-fixed-position-creates-stacking-context";
 const char kDisableFixedPositionCreatesStackingContext[]
     = "disable-fixed-position-creates-stacking-context";
 
 }  // namespace switches