Remove non-impl-side painting as an option for 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 143 matching lines @@
 const char kDisableHangMonitor[]            = "disable-hang-monitor";
 
 // Disable hiding the close buttons of inactive tabs when the tabstrip is in
 // stacked mode.
 const char kDisableHideInactiveStackedTabCloseButtons[] =
     "disable-hide-inactive-stacked-tab-close-buttons";
 
 // Disable the RenderThread's HistogramCustomizer.
 const char kDisableHistogramCustomizer[]    = "disable-histogram-customizer";
 
-// Paint content on the main thread instead of the compositor thread.
-const char kDisableImplSidePainting[]       = "disable-impl-side-painting";
-
 // Prevent Java from running.
 const char kDisableJava[]                   = "disable-java";
 
 // Don't kill a child process when it sends a bad IPC message.  Apart
 // from testing, it is a bad idea from a security perspective to enable
 // this switch.
 const char kDisableKillAfterBadIPC[]        = "disable-kill-after-bad-ipc";
 
 // Disables prefixed Encrypted Media API (e.g. webkitGenerateKeyRequest()).
 const char kDisablePrefixedEncryptedMedia[] =
@@ skipping 132 matching lines @@
 
 // Disable one or more Blink runtime-enabled features.
 // Use names from RuntimeEnabledFeatures.in, separated by commas.
 // Applied before kDisableBlinkFeatures, and after other flags that change these
 // features.
 const char kEnableBlinkFeatures[]           = "enable-blink-features";
 
 // PlzNavigate: Use the experimental browser-side navigation path.
 const char kEnableBrowserSideNavigation[]   = "enable-browser-side-navigation";
 
-// Defer image decoding in WebKit until painting.
-const char kEnableDeferredImageDecoding[]   = "enable-deferred-image-decoding";
-
 // Enables Delay Agnostic AEC in WebRTC.
 const char kEnableDelayAgnosticAec[]        = "enable-delay-agnostic-aec";
 
 // Enables delegated renderer.
 const char kEnableDelegatedRenderer[]       = "enable-delegated-renderer";
 
 // 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.
@@ skipping 675 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