Remove unused WebWindowFeatures from popup blocker, reducing WebString use in browser

third_party/WebKit/Source/platform/BUILD.gn

Index: third_party/WebKit/Source/platform/BUILD.gn
diff --git a/third_party/WebKit/Source/platform/BUILD.gn b/third_party/WebKit/Source/platform/BUILD.gn
index 1cedd42ed1329b060a975f0ecc8d68d0a84eeb67..3e0459765be33aee06d97ac9e0a48d0bfcd0b450 100644
--- a/third_party/WebKit/Source/platform/BUILD.gn
+++ b/third_party/WebKit/Source/platform/BUILD.gn
@@ -24,16 +24,8 @@ component("blink_common") {
   visibility = []  # Allow re-assignment of list.
   visibility = [ "//third_party/WebKit/*" ]
   sources = [
-    "exported/FilePathConversion.cpp",
-    "exported/URLConversion.cpp",
-    "exported/WebCString.cpp",
     "exported/WebString.cpp",
-    "exported/linux/WebFontRenderStyle.cpp",
   ]
-  if (is_android) {
-    set_sources_assignment_filter([])
-    sources += [ "exported/linux/WebFontRenderStyle.cpp" ]
-  }
 
   defines = [
     "BLINK_COMMON_IMPLEMENTATION=1",
@@ -494,14 +486,17 @@ component("platform") {
     "credentialmanager/PlatformFederatedCredential.h",
     "credentialmanager/PlatformPasswordCredential.cpp",
     "credentialmanager/PlatformPasswordCredential.h",
+    "exported/FilePathConversion.cpp",
     "exported/InterfaceRegistry.cpp",
     "exported/Platform.cpp",
     "exported/ServiceRegistry.cpp",
+    "exported/URLConversion.cpp",
     "exported/WebActiveGestureAnimation.cpp",
     "exported/WebActiveGestureAnimation.h",
     "exported/WebAudioBus.cpp",
     "exported/WebAudioDevice.cpp",
     "exported/WebBlobData.cpp",
+    "exported/WebCString.cpp",
     "exported/WebCache.cpp",
     "exported/WebCanvasCaptureHandler.cpp",
     "exported/WebCoalescedInputEvent.cpp",
@@ -589,6 +584,7 @@ component("platform") {
     "exported/WebURLResponse.cpp",
     "exported/WrappedResourceRequest.h",
     "exported/WrappedResourceResponse.h",
+    "exported/linux/WebFontRenderStyle.cpp",
     "feature_policy/FeaturePolicy.cpp",
     "feature_policy/FeaturePolicy.h",
     "fonts/AcceptLanguagesResolver.cpp",
@@ -1405,6 +1401,11 @@ component("platform") {
     "weborigin/URLSecurityOriginMap.h",
   ]
 
+  if (is_android) {
+    set_sources_assignment_filter([])
+    sources += [ "exported/linux/WebFontRenderStyle.cpp" ]
+  }
+
   sources -= blink_platform_neon_files
   sources -= blink_platform_msa_files
   sources -= blink_platform_sse_files