Implement "appinstalled" event on Android.

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
index 4bd3bdce4c842217a659d4a8bbe73cdeedee763e..dd8c1026375bfda37a7794e26639e8d83d46cd90 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
@@ -98,6 +98,7 @@
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8GCController.h"
 #include "bindings/core/v8/V8PerIsolateData.h"
+#include "core/EventTypeNames.h"
 #include "core/HTMLNames.h"
 #include "core/dom/Document.h"
 #include "core/dom/IconURL.h"
@@ -115,6 +116,7 @@
 #include "core/editing/iterators/TextIterator.h"
 #include "core/editing/serializers/Serialization.h"
 #include "core/editing/spellcheck/SpellChecker.h"
+#include "core/events/Event.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/fetch/SubstituteData.h"
 #include "core/frame/FrameHost.h"
@@ -2061,6 +2063,11 @@ void WebLocalFrameImpl::willShowInstallBannerPrompt(
       requestId, client()->appBannerClient(), frame(), platforms, reply);
 }
 
+void WebLocalFrameImpl::onAppInstalled() {
+  frame()->domWindow()->dispatchEvent(
+      Event::create(EventTypeNames::appinstalled));
+}
+
 void WebLocalFrameImpl::requestRunTask(WebSuspendableTask* task) const {
   DCHECK(frame());
   DCHECK(frame()->document());