Convert app banners to use Mojo.

third_party/WebKit/Source/modules/app_banner/BeforeInstallPromptEvent.cpp

Index: third_party/WebKit/Source/modules/app_banner/BeforeInstallPromptEvent.cpp
diff --git a/third_party/WebKit/Source/modules/app_banner/BeforeInstallPromptEvent.cpp b/third_party/WebKit/Source/modules/app_banner/BeforeInstallPromptEvent.cpp
index 8c7d0e3a56a753581674b4ce98ef755d8ac84552..b85517abf2d5479c206c2e896fe3c7e8b5be42a6 100644
--- a/third_party/WebKit/Source/modules/app_banner/BeforeInstallPromptEvent.cpp
+++ b/third_party/WebKit/Source/modules/app_banner/BeforeInstallPromptEvent.cpp
@@ -4,37 +4,42 @@
 
 #include "modules/app_banner/BeforeInstallPromptEvent.h"
 
-#include "bindings/core/v8/ScriptPromise.h"
 #include "core/dom/DOMException.h"
+#include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/frame/UseCounter.h"
-#include "modules/app_banner/AppBannerCallbacks.h"
 #include "modules/app_banner/BeforeInstallPromptEventInit.h"
-#include "public/platform/modules/app_banner/WebAppBannerClient.h"
+#include "public/platform/InterfaceProvider.h"
+#include "public/platform/WebString.h"
+#include "public/platform/modules/app_banner/WebAppBannerPromptResult.h"
 
 namespace blink {
 
 BeforeInstallPromptEvent::BeforeInstallPromptEvent(
     const AtomicString& name,
-    ExecutionContext* executionContext,
-    const Vector<String>& platforms,
+    LocalFrame* frame,
     int requestId,
-    WebAppBannerClient* client)
+    const Vector<String>& platforms)
     : Event(name, false, true),
-      m_platforms(platforms),
+      m_binding(this),
       m_requestId(requestId),
-      m_client(client),
-      m_userChoice(new UserChoiceProperty(executionContext,
+      m_platforms(platforms),
+      m_userChoice(new UserChoiceProperty(frame->document(),
                                           this,
                                           UserChoiceProperty::UserChoice)),
-      m_registered(false) {
-  UseCounter::count(executionContext, UseCounter::BeforeInstallPromptEvent);
+      m_promptCalled(false) {
+  UseCounter::count(frame, UseCounter::BeforeInstallPromptEvent);
+  frame->interfaceProvider()->getInterface(mojo::GetProxy(&m_bannerService));
+  m_bannerService->SetEvent(m_binding.CreateInterfacePtrAndBind());
 }
 
 BeforeInstallPromptEvent::BeforeInstallPromptEvent(
     const AtomicString& name,
     const BeforeInstallPromptEventInit& init)
-    : Event(name, false, true), m_requestId(-1), m_client(nullptr) {
+    : Event(name, false, true),
+      m_binding(this),
+      m_requestId(-1),
+      m_promptCalled(false) {
   if (init.hasPlatforms())
     m_platforms = init.platforms();
 }
@@ -48,14 +53,8 @@ Vector<String> BeforeInstallPromptEvent::platforms() const {
 ScriptPromise BeforeInstallPromptEvent::userChoice(ScriptState* scriptState) {
   UseCounter::count(scriptState->getExecutionContext(),
                     UseCounter::BeforeInstallPromptEventUserChoice);
-  if (m_userChoice && m_client && m_requestId != -1) {
-    if (!m_registered) {
-      m_registered = true;
-      m_client->registerBannerCallbacks(
-          m_requestId, new AppBannerCallbacks(m_userChoice.get()));
-    }
+  if (m_userChoice && m_requestId != -1)
     return m_userChoice->promise(scriptState->world());
-  }
   return ScriptPromise::rejectWithDOMException(
       scriptState,
       DOMException::create(InvalidStateError,
@@ -66,20 +65,15 @@ ScriptPromise BeforeInstallPromptEvent::prompt(ScriptState* scriptState) {
   UseCounter::count(scriptState->getExecutionContext(),
                     UseCounter::BeforeInstallPromptEventPrompt);
 
-  // |m_registered| will be true if userChoice has already been accessed
-  // or prompt() has already been called. Return a rejected promise in both
-  // these cases, as well as if we have a null client or invalid requestId.
-  if (m_registered || !defaultPrevented() || !m_client || m_requestId == -1)
+  if (!defaultPrevented() || m_promptCalled || m_requestId == -1)
     return ScriptPromise::rejectWithDOMException(
         scriptState,
         DOMException::create(InvalidStateError,
                              "The prompt() method may only be called once, "
                              "following preventDefault()."));
 
-  m_registered = true;
-  m_client->registerBannerCallbacks(m_requestId,
-                                    new AppBannerCallbacks(m_userChoice.get()));
-  m_client->showAppBanner(m_requestId);
+  m_promptCalled = true;
+  m_bannerService->DisplayAppBanner(m_requestId);
   return ScriptPromise::castUndefined(scriptState);
 }
 
@@ -93,6 +87,21 @@ void BeforeInstallPromptEvent::preventDefault() {
                     UseCounter::BeforeInstallPromptEventPreventDefault);
 }
 
+void BeforeInstallPromptEvent::BannerAccepted(int requestId,
+                                              const WTF::String& platform) {
+  if (requestId != m_requestId)
+    return;
+  m_userChoice->resolve(AppBannerPromptResult::create(
+      platform, WebAppBannerPromptResult::Outcome::Accepted));
+}
+
+void BeforeInstallPromptEvent::BannerDismissed(int requestId) {
+  if (requestId != m_requestId)
+    return;
+  m_userChoice->resolve(AppBannerPromptResult::create(
+      "", WebAppBannerPromptResult::Outcome::Dismissed));
+}
+
 DEFINE_TRACE(BeforeInstallPromptEvent) {
   visitor->trace(m_userChoice);
   Event::trace(visitor);