Remove blink::WebLayerClient and WebGraphicsLayerDebugInfo.

third_party/WebKit/Source/platform/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("//testing/test.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/config.gni")
 import("//third_party/WebKit/Source/platform/platform.gni")
 import("//third_party/WebKit/Source/platform/platform_generated.gni")
@@ skipping 178 matching lines @@
     "BLINK_PLATFORM_IMPLEMENTATION=1",
     "INSIDE_BLINK",
   ]
 
   include_dirs = [
     #"$angle_path/include",
     "$root_gen_dir/blink",
   ]
 
   public_deps = [
+    "//base",
+    "//cc",
     "//gpu/command_buffer/client:gles2_c_lib",
     "//skia",
     "//third_party:jpeg",
     "//third_party/iccjpeg",
     "//third_party/libpng",
     "//third_party/libwebp",
     "//third_party/ots",
     "//third_party/qcms",
     "//url",
     "//v8",
@@ skipping 212 matching lines @@
 }
 
 if (current_cpu == "x86" || current_cpu == "x64") {
   source_set("blink_x86_sse") {
     sources = blink_platform_sse_files
     deps = [
       ":blink_common",
     ]
   }
 }