Disable the context menu on the keyboard overlay and the print dialog.

chrome/browser/ui/views/keyboard_overlay_delegate.cc

Index: chrome/browser/ui/views/keyboard_overlay_delegate.cc
diff --git a/chrome/browser/ui/views/keyboard_overlay_delegate.cc b/chrome/browser/ui/views/keyboard_overlay_delegate.cc
index 8d0f4adb294b916a1b53e7c1e0b890cf732a4c69..c1448a9452814fc237d6836a7c31ec6c4761b330 100644
--- a/chrome/browser/ui/views/keyboard_overlay_delegate.cc
+++ b/chrome/browser/ui/views/keyboard_overlay_delegate.cc
@@ -74,3 +74,8 @@ void KeyboardOverlayDelegate::OnCloseContents(TabContents* source,
 bool KeyboardOverlayDelegate::ShouldShowDialogTitle() const {
   return false;
 }
+
+bool KeyboardOverlayDelegate::HandleContextMenu(
+    const ContextMenuParams& params) {
+  return true;
+}