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

Browsers can force a metro -> desktop transition by calling ShellExecuteEx
with a special argument.  However, the process that calls ShellExecute must 
itself be a metro process.  This change implements that behavior.  Without
this change, triggering a relaunch in desktop mode while in ash would 
launch chrome in the desktop mode, but it would not automatically transition
from metro to desktop.

cpu@:*metro*
bauerb@:chrome\browser\plugins\*
sky@:ui\aura\*
jschuh@:security review for ipc messages in ui\metro_viewer

BUG=280377

Review URL: https://chromiumcodereview.appspot.com/23592024

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221075 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 30 insertions, 3 deletions

diff --git a/win8/metro_driver/chrome_app_view_ash.cc b/win8/metro_driver/chrome_app_view_ash.cc
index 8686b53..206ea83 100644
--- a/win8/metro_driver/chrome_app_view_ash.cc
+++ b/win8/metro_driver/chrome_app_view_ash.cc
@@ -11,6 +11,7 @@
 
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/threading/thread.h"
@@ -83,6 +84,8 @@ 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 +105,14 @@ class ChromeChannelListener : public IPC::Listener {
   }
 
  private:
+  void OnOpenURLOnDesktop(const base::FilePath& 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 +513,18 @@ HRESULT ChromeAppViewAsh::Unsnap() {
 }
 
 
+void ChromeAppViewAsh::OnOpenURLOnDesktop(const base::FilePath& shortcut,
+    const string16& url) {
+  base::FilePath::StringType file = shortcut.value();
+  SHELLEXECUTEINFO sei = { sizeof(sei) };
+  sei.fMask = SEE_MASK_FLAG_LOG_USAGE;
+  sei.nShow = SW_SHOWNORMAL;
+  sei.lpFile = file.c_str();
+  sei.lpDirectory = L"";
+  sei.lpParameters = url.c_str();
+  BOOL result = ShellExecuteEx(&sei);
+}
+
 void ChromeAppViewAsh::OnSetCursor(HCURSOR cursor) {
   ::SetCursor(HCURSOR(cursor));
 }
diff --git a/win8/metro_driver/chrome_app_view_ash.h b/win8/metro_driver/chrome_app_view_ash.h
index 57f20b9..62f0476 100644
--- a/win8/metro_driver/chrome_app_view_ash.h
+++ b/win8/metro_driver/chrome_app_view_ash.h
@@ -10,16 +10,19 @@
 #include <windows.ui.input.h>
 #include <windows.ui.viewmanagement.h>
 
-#include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string16.h"
 #include "ui/base/events/event_constants.h"
 #include "win8/metro_driver/direct3d_helper.h"
 
+namespace base {
+class FilePath;
+}
+
 namespace IPC {
-  class Listener;
-  class ChannelProxy;
+class Listener;
+class ChannelProxy;
 }
 
 class OpenFilePickerSession;
@@ -46,6 +49,7 @@ class ChromeAppViewAsh
   // Returns S_OK on success.
   static HRESULT Unsnap();
 
+  void OnOpenURLOnDesktop(const base::FilePath& shortcut, const string16& url);
   void OnSetCursor(HCURSOR cursor);
   void OnDisplayFileOpenDialog(const string16& title,
                                const string16& filter,