Chromium compositor change implementing page-scale driven pinch-zoom.

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 298 matching lines @@
 // Enables partial swaps in the WK compositor on platforms that support it.
 const char kEnablePartialSwap[]             = "enable-partial-swap";
 
 // Enables UI releasing handle to front surface for background tabs on platforms
 // that support it.
 const char kEnableUIReleaseFrontSurface[] = "enable-ui-release-front-surface";
 
 // Enables touch-screen pinch gestures.
 const char kEnablePinch[]                   = "enable-pinch";
 
+// Enables an alternative pinch-zoom gesture support, via the threaded
+// compositor.
+const char kEnablePinchInCompositor[]       = "enable-pinch-in-compositor";
+
 // Enable caching of pre-parsed JS script data.  See http://crbug.com/32407.
 const char kEnablePreparsedJsCaching[]      = "enable-preparsed-js-caching";
 
 // Enable privileged WebGL extensions; without this switch such extensions are
 // available only to Chrome extensions.
 const char kEnablePrivilegedWebGLExtensions[] =
     "enable-privileged-webgl-extensions";
 
 // Aggressively free GPU command buffers belonging to hidden tabs.
 const char kEnablePruneGpuCommandBuffers[] =
@@ skipping 397 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