android: Remove in-process sync compositor code path

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"
 
 namespace switches {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
@@ skipping 901 matching lines @@
 const char kDisableScreenOrientationLock[]  = "disable-screen-orientation-lock";
 
 // Enable inverting of selection handles so that they are not clipped by the
 // viewport boundaries.
 const char kEnableAdaptiveSelectionHandleOrientation[] =
     "enable-adaptive-selection-handle-orientation";
 
 // Enable drag manipulation of longpress-triggered text selections.
 const char kEnableLongpressDragSelection[]  = "enable-longpress-drag-selection";
 
-// Enable IPC-based synchronous compositing. Used by Android WebView.
-const char kIPCSyncCompositing[]            = "ipc-sync-compositing";
-
 // The telephony region (ISO country code) to use in phone number detection.
 const char kNetworkCountryIso[] = "network-country-iso";
 
 // Enables remote debug over HTTP on the specified socket name.
 const char kRemoteDebuggingSocketName[]     = "remote-debugging-socket-name";
 
 // Block ChildProcessMain thread of the renderer's ChildProcessService until a
 // Java debugger is attached.
 const char kRendererWaitForJavaDebugger[] = "renderer-wait-for-java-debugger";
 
@@ skipping 86 matching lines @@
 const char kMemoryPressureThresholdsMb[] = "memory-pressure-thresholds-mb";
 
 // Enables the exporting of the tracing events to ETW. This is only supported on
 // Windows Vista and later.
 const char kTraceExportEventsToETW[] = "trace-export-events-to-etw";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches