Notify the Chrome metro driver component when a full screen toggle is...

Notify the Chrome metro driver component when a full screen toggle is occurring. The metro driver in its notification
would restore the original scroll position if the window was scrolled because it was covered by the OSK.

BUG=142439
R=sky
Review URL: https://chromiumcodereview.appspot.com/10823376

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@151996 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/views/frame/browser_frame_win.cc

@@ -65,6 +65,7 @@ extern "C" {
 typedef void (*SetFrameWindow)(HWND window);
 typedef void (*CloseFrameWindow)(HWND window);
 typedef void (*FlipFrameWindows)();
+typedef void (*MetroSetFullscreen)(bool fullscreen);
 }
 #endif  // USE_AURA
 
@@ -289,6 +290,22 @@ void BrowserFrameWin::FrameTypeChanged() {
     Show();
 }
 
+void BrowserFrameWin::SetFullscreen(bool fullscreen) {
+  if (base::win::IsMetroProcess()) {
+    HMODULE metro = base::win::GetMetroModule();
+    if (metro) {
+      MetroSetFullscreen set_full_screen = reinterpret_cast<MetroSetFullscreen>(
+        ::GetProcAddress(metro, "SetFullscreen"));
+      DCHECK(set_full_screen);
+      if (set_full_screen)
+        set_full_screen(fullscreen);
+    } else {
+      NOTREACHED() << "Failed to get metro driver module";
+    }
+  }
+  views::NativeWidgetWin::SetFullscreen(fullscreen);
+}
+
 
 ////////////////////////////////////////////////////////////////////////////////
 // BrowserFrameWin, NativeBrowserFrame implementation:

chrome/browser/ui/views/frame/browser_frame_win.h

@@ -61,6 +61,7 @@ class BrowserFrameWin : public views::NativeWidgetWin,
   virtual void Close() OVERRIDE;
   virtual void OnActivate(UINT action, BOOL minimized, HWND window) OVERRIDE;
   virtual void FrameTypeChanged() OVERRIDE;
+  virtual void SetFullscreen(bool fullscreen) OVERRIDE;
 
   // Overridden from NativeBrowserFrame:
   virtual views::NativeWidget* AsNativeWidget() OVERRIDE;