Removing canvas rendering mode switching feature

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 "build/build_config.h"
 #include "content/public/common/content_switches.h"
 #include "media/media_features.h"
 
 namespace switches {
 
@@ skipping 353 matching lines @@
     "enable-color-correct-rendering-default-mode";
 
 // Enables display list based 2d canvas implementation. Options:
 //  1. Enable: allow browser to use display list for 2d canvas (browser makes
 //     decision).
 //  2. Force: browser always uses display list for 2d canvas.
 const char kEnableDisplayList2dCanvas[]     = "enable-display-list-2d-canvas";
 const char kForceDisplayList2dCanvas[]      = "force-display-list-2d-canvas";
 const char kDisableDisplayList2dCanvas[]    = "disable-display-list-2d-canvas";
 
-// Enables dynamic rendering pipeline switching to optimize the
-// performance of 2d canvas
-const char kEnableCanvas2dDynamicRenderingModeSwitching[] =
-    "enable-canvas-2d-dynamic-rendering-mode-switching";
-
 // Enable experimental canvas features, e.g. canvas 2D context attributes
 const char kEnableExperimentalCanvasFeatures[] =
     "enable-experimental-canvas-features";
 
 // Enables Web Platform features that are in development.
 const char kEnableExperimentalWebPlatformFeatures[] =
     "enable-experimental-web-platform-features";
 
 // Comma-separated list of feature names to enable. See also kDisableFeatures.
 const char kEnableFeatures[] = "enable-features";
@@ skipping 699 matching lines @@
 // the given directory. Used primarily to gather samples for IPC fuzzing.
 const char kIpcDumpDirectory[] = "ipc-dump-directory";
 
 // Specifies the testcase used by the IPC fuzzer.
 const char kIpcFuzzerTestcase[] = "ipc-fuzzer-testcase";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches