Remove temporary code in FullscreenController and WebWidgetClient.

public/web/WebFrameClient.h

Index: public/web/WebFrameClient.h
diff --git a/public/web/WebFrameClient.h b/public/web/WebFrameClient.h
index ec92974a26981f0dea6e4ee1e5b81b396c702f87..bd8dec6db7d23e873a515b71605c21f86700f1b5 100644
--- a/public/web/WebFrameClient.h
+++ b/public/web/WebFrameClient.h
@@ -602,11 +602,13 @@ public:
 
     // Fullscreen ----------------------------------------------------------
 
-    // Called to enter/exit fullscreen mode. If enterFullScreen returns true,
-    // then WebWidget::{will,Did}EnterFullScreen should bound resizing the
-    // WebWidget into fullscreen mode. Similarly, when exitFullScreen is
-    // called, WebWidget::{will,Did}ExitFullScreen should bound resizing the
-    // WebWidget out of fullscreen mode.
+    // Called to enter/exit fullscreen mode.
+    // After calling enterFullscreen, WebWidget::{will,Did}EnterFullScreen
+    // should bound resizing the WebWidget into fullscreen mode.
+    // Similarly, when exitFullScreen is called,
+    // WebWidget::{will,Did}ExitFullScreen should bound resizing the WebWidget
+    // out of fullscreen mode.
+    // Note: the return value is ignored.
     virtual bool enterFullscreen() { return false; }
     virtual bool exitFullscreen() { return false; }