Move cc::DisplayItemList and related classes into cc/paint/

cc/base/BUILD.gn

 # Copyright 2015 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("//cc/cc.gni")
 
-cc_source_set("base") {
-  visibility = [ "//cc" ]
-
+component("cc_base") {

[enne (OOO), 2017/03/16 00:51:15]

This can't be called base because it collides with //base's output, I'm
guessing?

Is there a way to make the component //cc/base but change the library name? 

gn help output_name suggests that maybe you can do:
  component("base") {
    output_name = "cc_base"
  }

[chrishtr, 2017/03/16 02:00:35]

Yes.
b
Nice. That did the trick.

   sources = [
+    "base_export.h",
     "completion_event.h",
     "container_util.h",
     "contiguous_container.cc",
     "contiguous_container.h",
     "delayed_unique_notifier.cc",
     "delayed_unique_notifier.h",
     "histograms.cc",
     "histograms.h",
     "index_rect.cc",
     "index_rect.h",
@@ skipping 25 matching lines @@
     "tiling_data.h",
     "time_util.h",
     "unique_notifier.cc",
     "unique_notifier.h",
   ]
 
   deps = [
     "//base",
     "//base/third_party/dynamic_annotations",
     "//skia",
-    "//ui/gfx",
+    "//ui/gfx:geometry_skia",
     "//ui/gfx/geometry",
   ]
 
-  defines = [ "CC_IMPLEMENTATION=1" ]
+  defines = [ "CC_BASE_IMPLEMENTATION=1" ]
 }