Navigation transitions (web to native app): Hide/Show transition elements (Chrome side)

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 9dfdf6b0a1a9a383e1a3c5da5997b169842dba26..371c5410d073f35956a8badbbb94c38a35c01c94 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -938,6 +938,10 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
                         OnSetEditableSelectionOffsets)
     IPC_MESSAGE_HANDLER(FrameMsg_SetupTransitionView, OnSetupTransitionView)
     IPC_MESSAGE_HANDLER(FrameMsg_BeginExitTransition, OnBeginExitTransition)
+    IPC_MESSAGE_HANDLER(FrameMsg_HideTransitionElements,
+                        OnHideTransitionElements)
+    IPC_MESSAGE_HANDLER(FrameMsg_ShowTransitionElements,
+                        OnShowTransitionElements)
     IPC_MESSAGE_HANDLER(FrameMsg_Reload, OnReload)
     IPC_MESSAGE_HANDLER(FrameMsg_TextSurroundingSelectionRequest,
                         OnTextSurroundingSelectionRequest)
@@ -1493,6 +1497,18 @@ void RenderFrameImpl::OnBeginExitTransition(const std::string& css_selector) {
   frame_->document().beginExitTransition(WebString::fromUTF8(css_selector));
 }
 
+void RenderFrameImpl::OnHideTransitionElements(
+    const std::string& css_selector) {
+  frame_->document().setIsTransitionDocument();
+  frame_->document().hideTransitionElements(WebString::fromUTF8(css_selector));
+}
+
+void RenderFrameImpl::OnShowTransitionElements(
+    const std::string& css_selector) {
+  frame_->document().setIsTransitionDocument();
+  frame_->document().showTransitionElements(WebString::fromUTF8(css_selector));
+}
+
 bool RenderFrameImpl::RunJavaScriptMessage(JavaScriptMessageType type,
                                            const base::string16& message,
                                            const base::string16& default_value,