Move more of webcore_remaining into GN build files.

third_party/WebKit/Source/core/core.gni

Index: third_party/WebKit/Source/core/core.gni
diff --git a/third_party/WebKit/Source/core/core.gni b/third_party/WebKit/Source/core/core.gni
index d6bcd445eac0d34448bfc67c09f02ff989176b41..9692b5a27cc990b2245c9742ee999ec14f0c1438 100644
--- a/third_party/WebKit/Source/core/core.gni
+++ b/third_party/WebKit/Source/core/core.gni
@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
+import("//build/split_static_library.gni")
 import("//third_party/WebKit/Source/config.gni")
 
 blink_core_output_dir = "$root_gen_dir/blink/core"
@@ -46,6 +47,75 @@ if (is_component_build) {
   core_link_small_target_type = "static_library"
 }
 
+# Use this to generate a static library or source set that gets linked into
+# "core". This will either be a source_set (component build), a static library
+# (split_count undefined) or a split static library (split_count defined).
+#
+# Special values. All unlisted values are forwarded to the underlying library.
+#
+#   configs
+#      Normal meaning. The set_defaults call below will make the default value
+#      of configs in the calling code take into account the core_config_add and
+#      core_config_remove lists above. So you don't need to manually take these
+#      into account: just modify the configs as normal for target-specific
+#      overrides (or don't touch it).
+#
+#   split_count
+#      If defined, non-component builds will generate this number of static
+#      libraries by splitting the sources. This is for use on Windows where the
+#      maximum static library size is 2GB, and 64-bit builds with full symbols
+#      can exceed this if there are many sources.
+#
+#   deps
+#      Normal meaning but "core:prerequisites" target is always added. Callers
+#      shouldn'y list prerequisites as a dependency.
+#
+#   visibility
+#      Normal meaning if defined. If undefined, defaults to everything in core.
+template("blink_core_sources") {
+  if (is_component_build) {
+    target_type = "source_set"
+
+    # This assert avoids an unused variable warning.
+    assert(!defined(invoker.split_count) || invoker.split_count != 0)
+  } else if (!defined(invoker.split_count)) {
+    target_type = "static_library"
+  } else {
+    target_type = "split_static_library"
+  }
+
+  target(target_type, target_name) {
+    # The visibility will get overridden by forward_variables_from below if the
+    # invoker defined it.
+    visibility = [ "//third_party/WebKit/Source/core/*" ]
+
+    if (target_type == "split_static_library") {
+      split_count = invoker.split_count
+    }
+
+    deps = [
+      "//third_party/WebKit/Source/core:prerequisites",
+    ]
+    if (defined(invoker.deps)) {
+      deps += invoker.deps
+    }
+
+    # Take everything else not handled above from the invoker.
+    forward_variables_from(invoker,
+                           "*",
+                           [
+                             "deps",
+                             "split_count",
+                           ])
+  }
+}
+set_defaults("blink_core_sources") {
+  # This sets the default list of configs when the blink_core_sources target
+  # is defined. The default_compiler_configs comes from BUILDCONFIG.gn and
+  # is the list normally applied to static libraries and source sets.
+  configs = default_compiler_configs - core_config_remove + core_config_add
+}
+
 # This file is the GN version of core.gypi. We rebase most paths to be absolute
 # so these lists can be used by BUILD files in different directories without
 # worrying about the base directory.
@@ -83,8 +153,6 @@ core_typedefs_enums_only_idl_files =
 
 webcore_non_rendering_files =
     get_path_info(_gypi.webcore_non_rendering_files, "abspath")
-webcore_rendering_files =
-    get_path_info(_gypi.webcore_rendering_files, "abspath")
 webcore_testing_idl_files =
     get_path_info(_gypi.webcore_testing_idl_files, "abspath")
 webcore_testing_idl_with_modules_dependency_files =