Fullscreen JS API implementation.

content/browser/renderer_host/render_view_host_delegate.h

Index: content/browser/renderer_host/render_view_host_delegate.h
diff --git a/content/browser/renderer_host/render_view_host_delegate.h b/content/browser/renderer_host/render_view_host_delegate.h
index 8239ba31a0c7408679fdf428910a95392662a756..057157adabbb299169dd81309504ee9725a81650 100644
--- a/content/browser/renderer_host/render_view_host_delegate.h
+++ b/content/browser/renderer_host/render_view_host_delegate.h
@@ -358,6 +358,12 @@ class RenderViewHostDelegate : public IPC::Channel::Listener {
   virtual void HandleMouseUp() {}
   virtual void HandleMouseActivate() {}
 
+  // Puts the browser into fullscreen mode, focussing on this tab.

[Peter Kasting, 2011/08/11 17:53:38]

Nit: Talking about browsers and tabs here seems like a little bit of a layering
violation (I know, a few comments already do it above); maybe:

  // Called when the renderer wants to switch between fullscreen and
  // non-fullscreen modes.
  virtual void ToggleFullscreenModeForRVH(bool show_fullscreen);

[koz (OOO until 15th September), 2011/08/15 05:50:27]

I took the name and changed the wording on the comment slightly. How does the
new comment sound?

+  virtual void EnterFullscreenModeForCurrentTab() {}
+
+  // Makes the browser exit fullscreen mode.
+  virtual void ExitFullscreenMode() {}
+
  protected:
   virtual ~RenderViewHostDelegate() {}
 };