Description: Fixes the compilation errors with GCC 7
Origin: backport, http://trac.webkit.org/changeset/217601/webkit
                  http://trac.webkit.org/changeset/211434/webkit
                  http://trac.webkit.org/changeset/218488/webkit
--- a/modules/web/src/main/native/Source/cmake/OptionsCommon.cmake
+++ b/modules/web/src/main/native/Source/cmake/OptionsCommon.cmake
@@ -38,7 +38,9 @@
 define_property(TARGET PROPERTY FOLDER INHERITED BRIEF_DOCS "folder" FULL_DOCS "IDE folder name")
 
 if (COMPILER_IS_GCC_OR_CLANG)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-expansion-to-defined")
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-exceptions -fno-strict-aliasing")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-expansion-to-defined")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions -fno-strict-aliasing -fno-rtti")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y")
 endif ()
--- a/modules/web/src/main/native/Source/JavaScriptCore/inspector/InspectorBackendDispatcher.h
+++ b/modules/web/src/main/native/Source/JavaScriptCore/inspector/InspectorBackendDispatcher.h
@@ -28,6 +28,7 @@
 
 #include "InspectorFrontendRouter.h"
 #include "InspectorProtocolTypes.h"
+#include <functional>
 #include <wtf/DeprecatedOptional.h>
 #include <wtf/Optional.h>
 #include <wtf/RefCounted.h>
--- a/modules/web/src/main/native/Source/WebCore/css/CSSValue.h
+++ b/modules/web/src/main/native/Source/WebCore/css/CSSValue.h
@@ -22,6 +22,7 @@
 
 #include "ExceptionOr.h"
 #include "URLHash.h"
+#include <functional>
 #include <wtf/HashMap.h>
 #include <wtf/ListHashSet.h>
 #include <wtf/RefCounted.h>
--- a/modules/web/src/main/native/Source/WebCore/css/StyleSheetContents.h
+++ b/modules/web/src/main/native/Source/WebCore/css/StyleSheetContents.h
@@ -23,6 +23,7 @@
 #include "CSSParserMode.h"
 #include "CachePolicy.h"
 #include "URL.h"
+#include <functional>
 #include <wtf/HashMap.h>
 #include <wtf/ListHashSet.h>
 #include <wtf/RefCounted.h>
--- a/modules/web/src/main/native/Source/WebCore/dom/SlotAssignment.h
+++ b/modules/web/src/main/native/Source/WebCore/dom/SlotAssignment.h
@@ -27,6 +27,7 @@
 
 #include "RenderTreeUpdater.h"
 #include "ShadowRoot.h"
+#include <functional>
 #include <wtf/HashMap.h>
 #include <wtf/HashSet.h>
 #include <wtf/Vector.h>
--- a/modules/web/src/main/native/Source/WebCore/loader/NetscapePlugInStreamLoader.h
+++ b/modules/web/src/main/native/Source/WebCore/loader/NetscapePlugInStreamLoader.h
@@ -29,6 +29,7 @@
 #pragma once
 
 #include "ResourceLoader.h"
+#include <functional>
 #include <wtf/Forward.h>
 
 namespace WebCore {
--- a/modules/web/src/main/native/Source/WebCore/loader/ResourceLoader.h
+++ b/modules/web/src/main/native/Source/WebCore/loader/ResourceLoader.h
@@ -34,6 +34,7 @@
 #include "ResourceLoaderTypes.h"
 #include "ResourceRequest.h"
 #include "ResourceResponse.h"
+#include <functional>
 #include <wtf/Forward.h>
 
 #if ENABLE(CONTENT_EXTENSIONS)