[ios] Bundle additional libraries when building with custom WebKit.

Without these, dyld will load some custom-built frameworks and some
system frameworks, leading to a crash due to the mismatch.

BUG=934252

Change-Id: I9a5b22915a8252f193452d4d874e5f7b9ea72198
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1849212Reviewed-by: Ali Juma <ajuma@chromium.org>
Commit-Queue: Rohit Rao <rohitrao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704169}

ios/third_party/webkit/BUILD.gn

@@ -64,6 +64,14 @@ if (_build_custom_webkit) {
       "$_framework_out_dir/WebKit.framework/WebKit",
       "$_framework_out_dir/WebKitLegacy.framework",
       "$_framework_out_dir/WebKitLegacy.framework/WebKitLegacy",
+      "$_framework_out_dir/com.apple.WebKit.Networking.xpc",
+      "$_framework_out_dir/com.apple.WebKit.Networking.xpc/com.apple.WebKit.Networking.Development",
+      "$_framework_out_dir/com.apple.WebKit.Plugin.64.xpc",
+      "$_framework_out_dir/com.apple.WebKit.Plugin.64.xpc/com.apple.WebKit.Plugin.64.Development",
+      "$_framework_out_dir/com.apple.WebKit.WebContent.Development.xpc",
+      "$_framework_out_dir/com.apple.WebKit.WebContent.Development.xpc/com.apple.WebKit.WebContent.Development.Development",
+      "$_framework_out_dir/com.apple.WebKit.WebContent.xpc",
+      "$_framework_out_dir/com.apple.WebKit.WebContent.xpc/com.apple.WebKit.WebContent.Development",
     ]
 
     # TODO(crbug.com/934252): "-j 4" restricts xcodebuild to four simultaneous
@@ -91,6 +99,10 @@ if (_build_custom_webkit) {
       "$_framework_out_dir/WebCore.framework",
       "$_framework_out_dir/WebKit.framework",
       "$_framework_out_dir/WebKitLegacy.framework",
+      "$_framework_out_dir/com.apple.WebKit.Networking.xpc",
+      "$_framework_out_dir/com.apple.WebKit.Plugin.64.xpc",
+      "$_framework_out_dir/com.apple.WebKit.WebContent.Development.xpc",
+      "$_framework_out_dir/com.apple.WebKit.WebContent.xpc",
     ]
     outputs = [
       "{{bundle_contents_dir}}/WebKitFrameworks/{{source_file_part}}",