Add a histogram for renderer memory usage.

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 135 matching lines @@
 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 kInProcessWebGL[];
 CONTENT_EXPORT extern const char kJavaScriptFlags[];
 extern const char kLoadPlugin[];
 CONTENT_EXPORT extern const char kLoggingLevel[];
 extern const char kLogPluginMessages[];
+extern const char kMemoryMetrics[];
 // TODO(jam): this doesn't belong in content.
 CONTENT_EXPORT extern const char kNaClBrokerProcess[];
 CONTENT_EXPORT extern const char kNaClLoaderProcess[];
 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 76 matching lines @@
 
 #if defined(USE_AURA)
 CONTENT_EXPORT extern const char kTestCompositor[];
 #endif
 
 CONTENT_EXPORT extern const char kEnableOverscrollHistoryNavigation[];
 
 }  // namespace switches
 
 #endif  // CONTENT_PUBLIC_COMMON_CONTENT_SWITCHES_H_