[WeakMemoryCache] Cleanup Field-Trial code

content/public/common/content_features.cc

 // Copyright 2015 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_features.h"
 
 namespace features {
 
 // All features in alphabetical order.
@@ skipping 11 matching lines @@
 // Enables the credential management API:
 // https://w3c.github.io/webappsec-credential-management/
 const base::Feature kCredentialManagementAPI{"CredentialManagementAPI",
                                              base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enable GPU Rasterization by default. This can still be overridden by
 // --force-gpu-rasterization or --disable-gpu-rasterization.
 const base::Feature kDefaultEnableGpuRasterization{
     "DefaultEnableGpuRasterization", base::FEATURE_DISABLED_BY_DEFAULT};
 
-// Do not call SharedBuffer::unlock() (https://crbug.com/603791).
-const base::Feature kDoNotUnlockSharedBuffer{"DoNotUnlockSharedBuffer",
-                                             base::FEATURE_DISABLED_BY_DEFAULT};
-
 // Speculatively pre-evaluate Javascript which will likely use document.write to
 // load an external script. The feature extracts the written markup and sends it
 // to the preload scanner.
 const base::Feature kDocumentWriteEvaluator{"DocumentWriteEvaluator",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables the Feature Policy framework for granting and removing access to
 // other features through HTTP headers.
 const base::Feature kFeaturePolicy{"FeaturePolicy",
                                    base::FEATURE_DISABLED_BY_DEFAULT};
@@ skipping 92 matching lines @@
 
 // Enables token binding
 // (https://www.ietf.org/id/draft-ietf-tokbind-protocol-04.txt).
 const base::Feature kTokenBinding{"token-binding",
                                   base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables touchpad and wheel scroll latching.
 const base::Feature kTouchpadAndWheelScrollLatching{
     "TouchpadAndWheelScrollLatching", base::FEATURE_DISABLED_BY_DEFAULT};
 
-// Weak MemoryCache (https://crbug.com/603462).
-const base::Feature kWeakMemoryCache{"WeakMemoryCache",
-                                     base::FEATURE_DISABLED_BY_DEFAULT};
-
 // If WebGL Image Chromium is allowed, this feature controls whether it is
 // enabled.
 const base::Feature kWebGLImageChromium{"WebGLImageChromium",
                                         base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Makes WebRTC use ECDSA certs by default (i.e., when no cert type was
 // specified in JS).
 const base::Feature kWebRtcEcdsaDefault {"WebRTC-EnableWebRtcEcdsa",
                                          base::FEATURE_ENABLED_BY_DEFAULT};
 
@@ skipping 27 matching lines @@
 #endif
 
 #if defined(OS_WIN)
 // Emergency "off switch" for new Windows sandbox security mitigation,
 // sandbox::MITIGATION_EXTENSION_POINT_DISABLE.
 const base::Feature kWinSboxDisableExtensionPoints{
     "WinSboxDisableExtensionPoint", base::FEATURE_ENABLED_BY_DEFAULT};
 #endif
 
 }  // namespace features