Update from https://crrev.com/307330

skia/BUILD.gn

Index: skia/BUILD.gn
diff --git a/skia/BUILD.gn b/skia/BUILD.gn
index 83c4d8bb9e18ab637519b7b2f1d08cc168542582..e654afbda76327f481e6aca6326af0ce12bb0555 100644
--- a/skia/BUILD.gn
+++ b/skia/BUILD.gn
@@ -282,9 +282,6 @@ component("skia") {
     "ext/google_logging.cc",
     "ext/image_operations.cc",
     "ext/image_operations.h",
-    "ext/lazy_pixel_ref.cc",
-    "ext/lazy_pixel_ref.h",
-    "ext/SkThread_chrome.cc",
     "ext/opacity_draw_filter.cc",
     "ext/opacity_draw_filter.h",
     "ext/pixel_ref_utils.cc",
@@ -418,13 +415,6 @@ component("skia") {
     ]
   }
 
-  # Fixup Chrome sources.
-  if (is_posix) {
-    sources -= [ "ext/SkThread_chrome.cc" ]
-  }
-  if (is_win) {
-    sources -= [ "ext/SkThread_chrome.cc" ]
-  }
   if (is_android && (!enable_basic_printing && !enable_print_preview)) {
     sources -= [ "ext/skia_utils_base.cc" ]
   }