Delete a bunch of noop paint invalidation code.

sky/engine/web/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/ui.gni")
 import("//sky/engine/config.gni")
 
 visibility = [ "//sky/*" ]
 
 platform_web_unittest_files = [
@@ skipping 73 matching lines @@
     "WebTextCheckingCompletionImpl.cpp",
     "WebTextCheckingCompletionImpl.h",
     "WebTextCheckingResult.cpp",
     "WebTextInputInfo.cpp",
     "WebTextRun.cpp",
     "WebUserGestureIndicator.cpp",
     "WebUserGestureToken.cpp",
     "WebViewImpl.cpp",
     "WebViewImpl.h",
     "linux/WebFontRendering.cpp",
-    "painting/PaintAggregator.cpp",
-    "painting/PaintAggregator.h",
   ]
 
   if (is_component_build) {
     deps += [
       "//base/test:test_support",
       "//testing/gmock",
       "//testing/gtest",
       "//sky/engine/core:testing",
     ]
 
@@ skipping 54 matching lines @@
   configs += [ "//sky/engine:config" ]
 
   if (!is_component_build) {
     deps += [ "//sky/engine/core" ]
 
     configs += [ "//sky/engine:inside_blink" ]
 
     sources += platform_web_unittest_files
   }
 }