Adding --disable-plugins-discovery command line switch to not load third-party plugins from common …

content/public/common/content_switches.h

 // 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.
 
 // Defines all the "content" command-line switches.
 
 #ifndef CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_
 #define CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_
 
 #include "build/build_config.h"
@@ skipping 132 matching lines @@
 CONTENT_EXPORT extern const char kEnableSmoothScrolling[];
 CONTENT_EXPORT extern const char kEnableStatsTable[];
 extern const char kEnableStrictSiteIsolation[];
 CONTENT_EXPORT extern const char kEnableThreadedCompositing[];
 CONTENT_EXPORT extern const char kDisableThreadedCompositing[];
 extern const char kEnableVirtualGLContexts[];
 CONTENT_EXPORT extern const char kEnableTcpFastOpen[];
 CONTENT_EXPORT extern const char kDisableAcceleratedVideoDecode[];
 extern const char kEnableViewport[];
 CONTENT_EXPORT extern const char kExperimentalLocationFeatures[];
-CONTENT_EXPORT extern const char kExtraPluginDir[];
 CONTENT_EXPORT extern const char kForceCompositingMode[];
 extern const char kForceFieldTrials[];
 CONTENT_EXPORT extern const char kForceRendererAccessibility[];
 extern const char kGpuDeviceID[];
 extern const char kGpuDriverVendor[];
 extern const char kGpuDriverVersion[];
 extern const char kGpuLauncher[];
 CONTENT_EXPORT extern const char kGpuProcess[];
 extern const char kGpuStartupDialog[];
 extern const char kGpuVendorID[];
 CONTENT_EXPORT extern const char kHostResolverRules[];
 CONTENT_EXPORT extern const char kIgnoreCertificateErrors[];
 CONTENT_EXPORT extern const char kIgnoreGpuBlacklist[];
 extern const char kInProcessGPU[];
 extern const char kInProcessPlugins[];
 CONTENT_EXPORT extern const char kJavaScriptFlags[];
+CONTENT_EXPORT extern const char kExtraPluginDir[];
 extern const char kLoadPlugin[];
+CONTENT_EXPORT extern const char kDisablePluginsDiscovery[];

[seva, 2013/06/06 22:11:25]

BTW, what does "CONTENT_EXPORT" prefix (macros?) do? Some of the constants are
prefixed with that and some not; I failed to find an obvious reason. So I'm
unsure whether this new constant needs it.

[Bernhard Bauer, 2013/06/07 10:33:43]

One of the configurations we build Chrome in is a shared library build. On
Windows, that means multiple DLLs (chrome, content, etc.). Now, DLLs need to
declare the symbols they're exporting, otherwise you can't link against them. At
the same time, if you want to use a symbol from a different library, you need to
import it. The FOO_EXPORT macros let you do that, depending on whether you
include a file from inside or outside of the FOO DLL. What this means
effectively is that if you want to reference the flag outside of content/ (which
we do want in this case), we need to add the macro.

 CONTENT_EXPORT extern const char kLoggingLevel[];
 extern const char kLogPluginMessages[];
 extern const char kMemoryMetrics[];
 CONTENT_EXPORT extern const char kNoReferrers[];
 CONTENT_EXPORT extern const char kNoSandbox[];
 CONTENT_EXPORT extern const char kAllowNoSandboxJob[];
 extern const char kPluginLauncher[];
 CONTENT_EXPORT extern const char kPluginPath[];
 CONTENT_EXPORT extern const char kPluginProcess[];
 extern const char kPluginStartupDialog[];
@@ skipping 89 matching lines @@
 
 extern const char kEnableWebPInAcceptHeader[];
 
 CONTENT_EXPORT extern const char kOverscrollHistoryNavigation[];
 CONTENT_EXPORT extern const char kEnableOverscrollNotifications[];
 CONTENT_EXPORT extern const char kEnableWebGLDraftExtensions[];
 
 }  // namespace switches
 
 #endif  // CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_