Add flag to enable rendering of text using signed distance fields.

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"
 
 #include "base/command_line.h"
 
 namespace switches {
 
@@ skipping 206 matching lines @@
 // this switch.
 const char kDisableKillAfterBadIPC[]        = "disable-kill-after-bad-ipc";
 
 // Disables prefixed Encrypted Media API (e.g. webkitGenerateKeyRequest()).
 const char kDisablePrefixedEncryptedMedia[] =
     "disable-prefixed-encrypted-media";
 
 // Disables LCD text.
 const char kDisableLCDText[]                = "disable-lcd-text";
 
+// Disables distance field text.
+const char kDisableDistanceFieldText[]      = "disable-distance-field-text";
+
 // Disable LocalStorage.
 const char kDisableLocalStorage[]           = "disable-local-storage";
 
 // Force logging to be disabled.  Logging is enabled by default in debug
 // builds.
 const char kDisableLogging[]                = "disable-logging";
 
 // Disables Media Source API (i.e., the MediaSource object).
 const char kDisableMediaSource[]            = "disable-media-source";
 
@@ skipping 90 matching lines @@
     "enable-accelerated-fixed-root-background";
 
 // Enables accelerated compositing for overflow scroll. Promotes eligible
 // overflow:scroll elements to layers to enable accelerated scrolling for them.
 const char kEnableAcceleratedOverflowScroll[] =
     "enable-accelerated-overflow-scroll";
 
 // Enables LCD text.
 const char kEnableLCDText[]                 = "enable-lcd-text";
 
+// Enables using signed distance fields when rendering text.
+// Only valid if GPU rasterization is enabled as well.
+const char kEnableDistanceFieldText[]       = "enable-distance-field-text";
+
 // Enables experimental feature that maps multiple RenderLayers to
 // one composited layer to avoid pathological layer counts.
 const char kEnableLayerSquashing[] =
     "enable-layer-squashing";
 
 // Enable experimental container node culling.
 const char kEnableContainerCulling[]        = "enable-container-culling";
 
 // Turns on extremely verbose logging of accessibility events.
 const char kEnableAccessibilityLogging[]    = "enable-accessibility-logging";
@@ skipping 659 matching lines @@
 
 // Disables support for Core Animation plugins. This is triggered when
 // accelerated compositing is disabled. See http://crbug.com/122430 .
 const char kDisableCoreAnimationPlugins[] =
     "disable-core-animation-plugins";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches