Fix Windows build warning LNK4217 for blink_platform.dll.

third_party/WebKit/Source/platform/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//third_party/WebKit/public/public_features.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
@@ skipping 1099 matching lines @@
     "mediastream/MediaStreamSource.cpp",
     "mediastream/MediaStreamSource.h",
     "mediastream/MediaStreamWebAudioSource.cpp",
     "mediastream/MediaStreamWebAudioSource.h",
     "mhtml/ArchiveResource.cpp",
     "mhtml/MHTMLArchive.cpp",
     "mhtml/MHTMLArchive.h",
     "mhtml/MHTMLParser.cpp",
     "mhtml/MHTMLParser.h",
     "mojo/CommonCustomTypesStructTraits.cpp",
-    "mojo/GeometryStructTraits.cpp",
     "mojo/MojoHelper.h",
     "network/ContentSecurityPolicyParsers.cpp",
     "network/ContentSecurityPolicyParsers.h",
     "network/ContentSecurityPolicyResponseHeaders.cpp",
     "network/ContentSecurityPolicyResponseHeaders.h",
     "network/EncodedFormData.cpp",
     "network/EncodedFormData.h",
     "network/FormDataEncoder.cpp",
     "network/FormDataEncoder.h",
     "network/HTTPHeaderMap.cpp",
@@ skipping 938 matching lines @@
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":test_support",
     "//cc/surfaces:surface_id",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }