Move more standalone files from web/ to core/exported/.

third_party/WebKit/Source/web/BUILD.gn

Index: third_party/WebKit/Source/web/BUILD.gn
diff --git a/third_party/WebKit/Source/web/BUILD.gn b/third_party/WebKit/Source/web/BUILD.gn
index 9dce6150e0805cfaa18ced306a54150eee2daca7..31aaa2867edcd20b5c054d2bc2ac8d7cdbe46c8e 100644
--- a/third_party/WebKit/Source/web/BUILD.gn
+++ b/third_party/WebKit/Source/web/BUILD.gn
@@ -157,7 +157,6 @@ component("web") {
     "WebMetaElement.cpp",
     "WebNode.cpp",
     "WebOptionElement.cpp",
-    "WebPageImportanceSignals.cpp",
     "WebPagePopupImpl.cpp",
     "WebPagePopupImpl.h",
     "WebPepperSocket.cpp",
@@ -167,10 +166,8 @@ component("web") {
     "WebPluginContainerImpl.cpp",
     "WebPluginContainerImpl.h",
     "WebPluginDocument.cpp",
-    "WebPluginScriptForbiddenScope.cpp",
     "WebRemoteFrameImpl.cpp",
     "WebRemoteFrameImpl.h",
-    "WebScopedUserGesture.cpp",
     "WebScopedWindowFocusAllowedIndicator.cpp",
     "WebSearchableFormData.cpp",
     "WebSelectElement.cpp",
@@ -185,8 +182,6 @@ component("web") {
     "WebTextCheckingCompletionImpl.cpp",
     "WebTextCheckingCompletionImpl.h",
     "WebTextCheckingResult.cpp",
-    "WebUserGestureIndicator.cpp",
-    "WebUserGestureToken.cpp",
     "WebUserMediaRequest.cpp",
     "WebViewImpl.cpp",
     "WebViewImpl.h",