[SP] Enable Slimming Paint by default in Chromium and Blink.

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 {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
 // have an effect. 0 disables MSAA.
@@ skipping 216 matching lines @@
 
 // Disable the seccomp filter sandbox (seccomp-bpf) (Linux only).
 const char kDisableSeccompFilterSandbox[]   = "disable-seccomp-filter-sandbox";
 
 // Disable the setuid sandbox (Linux only).
 const char kDisableSetuidSandbox[]          = "disable-setuid-sandbox";
 
 // Disable shared workers.
 const char kDisableSharedWorkers[]          = "disable-shared-workers";
 
+// Disables slimming paint: http://www.chromium.org/blink/slimming-paint
+// Can be overridden by kEnableSlimmingPaint.
+const char kDisableSlimmingPaint[]           = "disable-slimming-paint";
+
 // Disable smooth scrolling for testing.
 const char kDisableSmoothScrolling[]        = "disable-smooth-scrolling";
 
 // Disables the use of a 3D software rasterizer.
 const char kDisableSoftwareRasterizer[]     = "disable-software-rasterizer";
 
 // Disables the Web Speech API.
 const char kDisableSpeechAPI[]              = "disable-speech-api";
 
 // Disables SVG 1.1 DOM.
@@ skipping 157 matching lines @@
 
 // Enables seccomp-bpf support for Android. Requires experimental kernel
 // support. <http://crbug.com/166704>
 const char kEnableSeccompFilterSandbox[] =
     "enable-seccomp-filter-sandbox";
 
 // Enables the Skia benchmarking extension
 const char kEnableSkiaBenchmarking[]        = "enable-skia-benchmarking";
 
 // Enables slimming paint: http://www.chromium.org/blink/slimming-paint
+// Overrides kDisableSlimmingPaint if both are present.
 const char kEnableSlimmingPaint[]           = "enable-slimming-paint";
 
 // On platforms that support it, enables smooth scroll animation.
 const char kEnableSmoothScrolling[]         = "enable-smooth-scrolling";
 
 // Enable spatial navigation
 const char kEnableSpatialNavigation[]       = "enable-spatial-navigation";
 
 // Enables implementation of the Cache-Control: stale-while-revalidate directive
 // which permits servers to allow the use of stale resources while revalidation
@@ skipping 573 matching lines @@
 // Windows Vista and later.
 const char kTraceExportEventsToETW[] = "trace-export-events-to-etw";
 #endif
 
 // Enables the use of NPAPI plugins.
 const char kEnableNpapiForTesting[] = "enable-npapi-for-testing";
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches