UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2977.0 Safari/537.36

Steps to reproduce the problem:
1. Supply enable_webrtc = false when building Chromium.
2. Build failure during linking.

What is the expected behavior?
To successfully build without WebRTC enabled.

What went wrong?
Link error.

D:/depot_tools/python276_bin/python.exe ../../build/toolchain/win/tool_wrapper.py link-wrapper environment.x64 False link.exe /nologo /IMPLIB:./chrome.dll.lib /DLL /OUT:./chrome.dll /PDB:./chrome.dll.pdb @./chrome.dll.rsp
video_capture_manager.obj : error LNK2019: unresolved external symbol "public: static class std::unique_ptr<class media::VideoCaptureDevice,struct std::default_delete<class media::VideoCaptureDevice> > __cdecl content::DesktopCaptureDevice::Create(struct content::DesktopMediaID const &)" (?Create@DesktopCaptureDevice@content@@SA?AV?$unique_ptr@VVideoCaptureDevice@media@@U?$default_delete@VVideoCaptureDevice@media@@@std@@@std@@AEBUDesktopMediaID@2@@Z) referenced in function "private: class std::unique_ptr<class media::VideoCaptureDevice,struct std::default_delete<class media::VideoCaptureDevice> > __cdecl content::VideoCaptureManager::DoStartDesktopCaptureOnDeviceThread(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,struct media::VideoCaptureParams const &,class std::unique_ptr<class media::VideoCaptureDevice::Client,struct std::default_delete<class media::VideoCaptureDevice::Client> >)" (?DoStartDesktopCaptureOnDeviceThread@VideoCaptureManager@content@@AEAA?AV?$unique_ptr@VVideoCaptureDevice@media@@U?$default_delete@VVideoCaptureDevice@media@@@std@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@4@AEBUVideoCaptureParams@media@@V?$unique_ptr@VClient@VideoCaptureDevice@media@@U?$default_delete@VClient@VideoCaptureDevice@media@@@std@@@4@@Z)
video_capture_manager.obj : error LNK2019: unresolved external symbol "public: void __cdecl content::DesktopCaptureDevice::SetNotificationWindowId(__int64)" (?SetNotificationWindowId@DesktopCaptureDevice@content@@QEAAX_J@Z) referenced in function "private: void __cdecl content::VideoCaptureManager::SetDesktopCaptureWindowIdOnDeviceThread(class media::VideoCaptureDevice *,__int64)" (?SetDesktopCaptureWindowIdOnDeviceThread@VideoCaptureManager@content@@AEAAXPEAVVideoCaptureDevice@media@@_J@Z)
./chrome.dll : fatal error LNK1120: 2 unresolved externals

Did this work before? Yes Started sometime around or after 57.0.2971.x.

Chrome version: 57.0.2977.0  Channel: n/a
OS Version: 10.0
Flash Version: not installed

Pertinent build arguments leading to linking failure:

is_debug = false
target_cpu = "x64"
enable_webrtc = disable

Enabling WebRTC allows the build to successfully complete.