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

extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/renderer/guest_view/guest_view_internal_custom_bindings.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "content/public/child/v8_value_converter.h"
 #include "content/public/renderer/render_view.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_messages.h"
 #include "extensions/common/guest_view/guest_view_constants.h"
 #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"
 
 using content::V8ValueConverter;
 
 namespace extensions {
 
 GuestViewInternalCustomBindings::GuestViewInternalCustomBindings(
     ScriptContext* context)
     : ObjectBackedNativeHandler(context) {
   RouteFunction("AttachGuest",
                 base::Bind(&GuestViewInternalCustomBindings::AttachGuest,
                            base::Unretained(this)));
   RouteFunction("DetachGuest",
                 base::Bind(&GuestViewInternalCustomBindings::DetachGuest,
                            base::Unretained(this)));
   RouteFunction("GetContentWindow",
                 base::Bind(&GuestViewInternalCustomBindings::GetContentWindow,
                            base::Unretained(this)));
   RouteFunction(
       "RegisterDestructionCallback",
       base::Bind(&GuestViewInternalCustomBindings::RegisterDestructionCallback,
                  base::Unretained(this)));
   RouteFunction(
       "RegisterElementResizeCallback",
       base::Bind(
           &GuestViewInternalCustomBindings::RegisterElementResizeCallback,
           base::Unretained(this)));
+  RouteFunction(
+      "RunWithGesture",
+      base::Bind(&GuestViewInternalCustomBindings::RunWithGesture,
+                 base::Unretained(this)));
 }
 
 void GuestViewInternalCustomBindings::AttachGuest(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   // Allow for an optional callback parameter.
   CHECK(args.Length() >= 3 && args.Length() <= 4);
   // Element Instance ID.
   CHECK(args[0]->IsInt32());
   // Guest Instance ID.
   CHECK(args[1]->IsInt32());
@@ skipping 135 matching lines @@
       ExtensionsGuestViewContainer::FromID(element_instance_id);
   if (!guest_view_container)
     return;
 
   guest_view_container->RegisterElementResizeCallback(
       args[1].As<v8::Function>(), args.GetIsolate());
 
   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