[DevTools] Prepare to move Popover to shadow DOM.

third_party/WebKit/Source/devtools/BUILD.gn

Index: third_party/WebKit/Source/devtools/BUILD.gn
diff --git a/third_party/WebKit/Source/devtools/BUILD.gn b/third_party/WebKit/Source/devtools/BUILD.gn
index edda862de0500328f6a7458806d63a6a9553c211..a03b586b5bed282b7396119a171fd65496aa21ca 100644
--- a/third_party/WebKit/Source/devtools/BUILD.gn
+++ b/third_party/WebKit/Source/devtools/BUILD.gn
@@ -124,9 +124,11 @@ all_devtools_files = [
   "front_end/components/DOMBreakpointsSidebarPane.js",
   "front_end/components/DOMPresentationUtils.js",
   "front_end/components/domUtils.css",
+  "front_end/components/imagePreview.css",
   "front_end/components/JavaScriptAutocomplete.js",
   "front_end/components/Linkifier.js",
   "front_end/components/module.json",
+  "front_end/components/objectPopover.css",
   "front_end/components/ObjectPopoverHelper.js",
   "front_end/components/objectPropertiesSection.css",
   "front_end/components/ObjectPropertiesSection.js",
@@ -313,6 +315,7 @@ all_devtools_files = [
   "front_end/network/networkPanel.css",
   "front_end/network/NetworkPanel.js",
   "front_end/network/NetworkTimeCalculator.js",
+  "front_end/network/networkTimingTable.css",
   "front_end/network/NetworkWaterfallColumn.js",
   "front_end/network/requestCookiesView.css",
   "front_end/network/RequestCookiesView.js",
@@ -487,6 +490,7 @@ all_devtools_files = [
   "front_end/source_frame/FontView.js",
   "front_end/source_frame/imageView.css",
   "front_end/source_frame/ImageView.js",
+  "front_end/source_frame/messagesPopover.css",
   "front_end/source_frame/module.json",
   "front_end/source_frame/ResourceSourceFrame.js",
   "front_end/source_frame/SourceCodeDiff.js",