Make the metro viewer responsible for relaunching browser in desktop mode.

win8/metro_driver/chrome_app_view_ash.cc

Index: win8/metro_driver/chrome_app_view_ash.cc
diff --git a/win8/metro_driver/chrome_app_view_ash.cc b/win8/metro_driver/chrome_app_view_ash.cc
index 8686b53c3930d5fbd348e4f5e919d8bd9d523b8c..f410b64dce079fa70fd8251cfc6b877e9663000e 100644
--- a/win8/metro_driver/chrome_app_view_ash.cc
+++ b/win8/metro_driver/chrome_app_view_ash.cc
@@ -83,6 +83,8 @@ class ChromeChannelListener : public IPC::Listener {
 
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE {
     IPC_BEGIN_MESSAGE_MAP(ChromeChannelListener, message)
+      IPC_MESSAGE_HANDLER(MetroViewerHostMsg_OpenURLOnDesktop,
+                          OnOpenURLOnDesktop)
       IPC_MESSAGE_HANDLER(MetroViewerHostMsg_SetCursor, OnSetCursor)
       IPC_MESSAGE_HANDLER(MetroViewerHostMsg_DisplayFileOpen,
                           OnDisplayFileOpenDialog)
@@ -102,6 +104,13 @@ class ChromeChannelListener : public IPC::Listener {
   }
 
  private:
+  void OnOpenURLOnDesktop(const string16& shortcut, const string16& url) {
+    ui_proxy_->PostTask(FROM_HERE,
+      base::Bind(&ChromeAppViewAsh::OnOpenURLOnDesktop,
+      base::Unretained(app_view_),
+      shortcut, url));
+  }
+
   void OnSetCursor(int64 cursor) {
     ui_proxy_->PostTask(FROM_HERE,
                         base::Bind(&ChromeAppViewAsh::OnSetCursor,
@@ -502,6 +511,17 @@ HRESULT ChromeAppViewAsh::Unsnap() {
 }
 
 
+void ChromeAppViewAsh::OnOpenURLOnDesktop(const string16& shortcut,
+    const string16& url) {
+  SHELLEXECUTEINFO sei = { sizeof(sei) };
+  sei.fMask = SEE_MASK_FLAG_LOG_USAGE;
+  sei.nShow = SW_SHOWNORMAL;
+  sei.lpFile = shortcut.c_str();
+  sei.lpDirectory = L"";
+  sei.lpParameters = url.c_str();
+  BOOL result = ShellExecuteEx(&sei);
+}
+
 void ChromeAppViewAsh::OnSetCursor(HCURSOR cursor) {
   ::SetCursor(HCURSOR(cursor));
 }