<webview>: Implement fullscreen permission for html5 element.requestFullscreen()

extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc

Index: extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
diff --git a/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc b/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
index a57f4541024f0a96c1b9a03a90d339d3e598013a..8bc2a2e83174b37f688553f4de785e89dc67f3ec 100644
--- a/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
+++ b/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
@@ -15,6 +15,7 @@
 #include "extensions/renderer/guest_view/extensions_guest_view_container.h"
 #include "extensions/renderer/script_context.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
+#include "third_party/WebKit/public/web/WebScopedUserGesture.h"
 #include "third_party/WebKit/public/web/WebView.h"
 #include "v8/include/v8.h"
 
@@ -43,6 +44,10 @@ GuestViewInternalCustomBindings::GuestViewInternalCustomBindings(
       base::Bind(
           &GuestViewInternalCustomBindings::RegisterElementResizeCallback,
           base::Unretained(this)));
+  RouteFunction(
+      "RunWithGesture",
+      base::Bind(&GuestViewInternalCustomBindings::RunWithGesture,
+                 base::Unretained(this)));
 }
 
 void GuestViewInternalCustomBindings::AttachGuest(
@@ -198,4 +203,14 @@ void GuestViewInternalCustomBindings::RegisterElementResizeCallback(
   args.GetReturnValue().Set(v8::Boolean::New(context()->isolate(), true));
 }
 
+void GuestViewInternalCustomBindings::RunWithGesture(
+    const v8::FunctionCallbackInfo<v8::Value>& args) {
+  // Gesture is required to request fullscreen.
+  blink::WebScopedUserGesture user_gesture;
+  CHECK_EQ(args.Length(), 1);
+  CHECK(args[0]->IsFunction());
+  v8::Handle<v8::Value> no_args;
+  context()->CallFunction(v8::Handle<v8::Function>::Cast(args[0]), 0, &no_args);
+}
+
 }  // namespace extensions