Add enable flag for pointer events in about://flags

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 303 matching lines @@
 // Only valid if GPU rasterization is enabled as well.
 const char kEnableDistanceFieldText[]       = "enable-distance-field-text";
 
 // Enable the experimental Credential Manager JavaScript API.
 const char kEnableCredentialManagerAPI[]    = "enable-credential-manager-api";
 
 // Enable the creation of compositing layers when it would prevent LCD text.
 const char kEnablePreferCompositingToLCDText[] =
     "enable-prefer-compositing-to-lcd-text";
 
+// Enable partial experimental support for pointer event feature in blink
+const char kEnablePointerEvents[]           = "enable-pointer-events";
+
 // 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";
 
 // Enables display list based 2d canvas implementation. Options:
@@ skipping 661 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