Remove Float32ImageData and update ImageData for color management

third_party/WebKit/Source/core/html/BUILD.gn

 # Copyright 2016 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/split_static_library.gni")
 import("//third_party/WebKit/Source/core/core.gni")
 
 blink_core_sources("html") {
   split_count = 5
 
   sources = [
     "AutoplayUmaHelper.cpp",
     "AutoplayUmaHelper.h",
     "ClassList.cpp",
     "ClassList.h",
     "CrossOriginAttribute.cpp",
     "CrossOriginAttribute.h",
     "DocumentNameCollection.cpp",
     "DocumentNameCollection.h",
-    "Float32ImageData.cpp",
-    "Float32ImageData.h",
     "FormAssociated.h",
     "FormData.cpp",
     "FormData.h",
     "HTMLAllCollection.cpp",
     "HTMLAllCollection.h",
     "HTMLAnchorElement.cpp",
     "HTMLAnchorElement.h",
     "HTMLAreaElement.cpp",
     "HTMLAreaElement.h",
     "HTMLAudioElement.cpp",
@@ skipping 482 matching lines @@
     "track/vtt/VTTToken.h",
     "track/vtt/VTTTokenizer.cpp",
     "track/vtt/VTTTokenizer.h",
   ]
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }