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

extensions/browser/guest_view/guest_view_base.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/browser/guest_view/guest_view_base.h"
 
 #include "base/lazy_instance.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/ui/zoom/page_zoom.h"
 #include "components/ui/zoom/zoom_controller.h"
@@ skipping 61 matching lines @@
 }
 
 // This observer ensures that the GuestViewBase destroys itself when its
 // embedder goes away.
 class GuestViewBase::OwnerLifetimeObserver : public WebContentsObserver {
  public:
   OwnerLifetimeObserver(GuestViewBase* guest,
                         content::WebContents* embedder_web_contents)
       : WebContentsObserver(embedder_web_contents),
         destroyed_(false),
-        guest_(guest) {}
+        guest_(guest),
+        fullscreen_(false) {}
 
   ~OwnerLifetimeObserver() override {}
 
+  void DidToggleFullscreenModeForTab(
+      bool entered_fullscreen) override {
+    fullscreen_ = entered_fullscreen;
+    printf("+++++ %s, entered_fullscreen: %d\n",
+        __PRETTY_FUNCTION__, entered_fullscreen);
+    guest_->EmbedderFullscreenToggled(fullscreen_);
+  }
+
+  void MainFrameWasResized(bool width_changed) override {
+    printf("EMB::MainFrameWasResized\n");
+    printf("Will call EMB::IsFullscreenForTabOrPending\n");
+    bool is_f =
+        web_contents()->GetDelegate()->IsFullscreenForTabOrPending(
+            web_contents());
+    printf("Called EMB::IsFullscreenForTabOrPending\n");
+    if (fullscreen_ && !is_f) {
+//        web_contents()->GetDelegate()->IsFullscreenForTabOrPending(
+//            web_contents())) {
+      fullscreen_ = false;
+      guest_->EmbedderFullscreenToggled(fullscreen_);
+    }
+  }
+
   // WebContentsObserver implementation.
   void WebContentsDestroyed() override {
     // If the embedder is destroyed then destroy the guest.
     Destroy();
   }
 
   void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) override {
     // If the embedder navigates to a different page then destroy the guest.
     if (details.is_navigation_to_different_page())
       Destroy();
   }
 
   void RenderProcessGone(base::TerminationStatus status) override {
     // If the embedder crashes, then destroy the guest.
     Destroy();
   }
 
  private:
   bool destroyed_;
   GuestViewBase* guest_;
+  bool fullscreen_;
 
   void Destroy() {
     if (destroyed_)
       return;
 
     destroyed_ = true;
     guest_->EmbedderWillBeDestroyed();
     guest_->Destroy();
   }
 
@@ skipping 695 matching lines @@
 void GuestViewBase::RegisterGuestViewTypes() {
   AppViewGuest::Register();
   ExtensionOptionsGuest::Register();
   ExtensionViewGuest::Register();
   MimeHandlerViewGuest::Register();
   SurfaceWorkerGuest::Register();
   WebViewGuest::Register();
 }
 
 }  // namespace extensions