Convert app banners to use Mojo.

third_party/WebKit/public/BUILD.gn

Index: third_party/WebKit/public/BUILD.gn
diff --git a/third_party/WebKit/public/BUILD.gn b/third_party/WebKit/public/BUILD.gn
index cff59234d42dd0c32efed66a7b8704959c73436e..0771a64e5168462f8de5741b840ddc6fa7f02e7f 100644
--- a/third_party/WebKit/public/BUILD.gn
+++ b/third_party/WebKit/public/BUILD.gn
@@ -315,8 +315,6 @@ source_set("blink_headers") {
     "platform/linux/WebFontRenderStyle.h",
     "platform/linux/WebSandboxSupport.h",
     "platform/mac/WebSandboxSupport.h",
-    "platform/modules/app_banner/WebAppBannerClient.h",
-    "platform/modules/app_banner/WebAppBannerPromptReply.h",
     "platform/modules/app_banner/WebAppBannerPromptResult.h",
     "platform/modules/background_sync/WebSyncClient.h",
     "platform/modules/background_sync/WebSyncError.h",
@@ -631,6 +629,7 @@ grit("image_resources") {
 mojom("mojo_bindings") {
   sources = [
     "platform/mime_registry.mojom",
+    "platform/modules/app_banner/app_banner.mojom",

[Sam McNally, 2016/10/06 07:17:44]

Add your mojom to "new_wrapper_types_mojo_bindings" instead. Then your generated
bindings will use std::string instead of mojo::String.

[dominickn, 2016/10/06 22:58:12]

Done.

     "platform/modules/background_sync/background_sync.mojom",
     "platform/modules/bluetooth/web_bluetooth.mojom",
     "platform/modules/broadcastchannel/broadcast_channel.mojom",