Add experimental code behind a flag for Content Size Policy

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 855 matching lines @@
 
 // Use the Mandoline UI Service in the Chrome render process.
 const char kUseMusInRenderer[] = "use-mus-in-renderer";
 
 // Enable native GPU memory buffer support when available.
 const char kEnableNativeGpuMemoryBuffers[] = "enable-native-gpu-memory-buffers";
 
 // Texture target for CHROMIUM_image backed content textures.
 const char kContentImageTextureTarget[] = "content-image-texture-target";
 
+// The max total content size a cross-site subframe can use. In bytes.
+const char kContentSizePolicy[] = "content-size-policy";
+
 // Texture target for CHROMIUM_image backed video frame textures.
 const char kVideoImageTextureTarget[] = "video-image-texture-target";
 
 // Set when Chromium should use a mobile user agent.
 const char kUseMobileUserAgent[] = "use-mobile-user-agent";
 
 // Use remote compositor for the renderer.
 const char kUseRemoteCompositing[] = "use-remote-compositing";
 
 // The contents of this flag are prepended to the utility process command line.
@@ skipping 190 matching lines @@
 // the given directory. Used primarily to gather samples for IPC fuzzing.
 const char kIpcDumpDirectory[] = "ipc-dump-directory";
 
 // Specifies the testcase used by the IPC fuzzer.
 const char kIpcFuzzerTestcase[] = "ipc-fuzzer-testcase";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches