Enable incremental linking for blink_core, 32-bit

third_party/WebKit/Source/core/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/chromecast_build.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
@@ skipping 159 matching lines @@
     "//third_party/WebKit/Source/core/streams",
     "//third_party/WebKit/Source/core/style:rendering",
     "//third_party/WebKit/Source/core/style:svg",
     "//third_party/WebKit/Source/core/svg",
     "//third_party/WebKit/Source/core/timing",
     "//third_party/WebKit/Source/core/workers",
     "//third_party/WebKit/Source/core/xml",
     "//third_party/WebKit/Source/core/xmlhttprequest",
   ]
 
-  if (is_win && is_debug && is_component_build) {
-    # Incremental linking doesn't work on this target in debug mode, even
-    # with symbol_level=1.
+  if (is_win && is_debug && is_component_build && current_cpu == "x64") {
+    # Incremental linking doesn't work on this target in debug mode for
+    # 64-bit builds - the .ilk file gets too large and the incremental
+    # link silently fails. Therefore 32-bit builds should be used for
+    # fastest incremental build performance.
     configs -= [ "//build/config/win:default_incremental_linking" ]
     configs += [ "//build/config/win:no_incremental_linking" ]
   }
 
   public_configs = [ ":core_include_dirs" ]
 
   if (is_mac) {
     libs = [
       "AppKit.framework",
       "Carbon.framework",
@@ skipping 1042 matching lines @@
   sources = [
     "html/parser/HTMLPreloadScannerFuzzer.cpp",
     "html/parser/TextResourceDecoderForFuzzing.h",
   ]
   seed_corpus = "//third_party/WebKit/LayoutTests/fast/parser"
   deps = [
     ":core",
     "../platform:blink_fuzzer_test_support",
   ]
 }