Add IPCs to check web copy/cut/paste for extensions with the appropriate permission bit.

chrome/browser/tab_contents/interstitial_page.cc

Index: chrome/browser/tab_contents/interstitial_page.cc
diff --git a/chrome/browser/tab_contents/interstitial_page.cc b/chrome/browser/tab_contents/interstitial_page.cc
index 47fb774f59d1e68c4541bbac537c0b17d284da9b..887f9a269622601e9825394eefa0bd3440873309 100644
--- a/chrome/browser/tab_contents/interstitial_page.cc
+++ b/chrome/browser/tab_contents/interstitial_page.cc
@@ -110,6 +110,8 @@ class InterstitialPage::InterstitialPageRVHViewDelegate
                              int selected_item,
                              const std::vector<WebMenuItem>& items,
                              bool right_aligned);
+  virtual bool IsCopyCutEnabled();
+  virtual bool IsPasteEnabled();
   virtual void StartDragging(const WebDropData& drop_data,
                              WebDragOperationsMask operations_allowed,
                              const SkBitmap& image,
@@ -639,6 +641,14 @@ void InterstitialPage::InterstitialPageRVHViewDelegate::ShowPopupMenu(
     bool right_aligned) {
 }
 
+bool InterstitialPage::InterstitialPageRVHViewDelegate::IsCopyCutEnabled() {
+  return false;
+}
+
+bool InterstitialPage::InterstitialPageRVHViewDelegate::IsPasteEnabled() {
+  return false;
+}
+
 void InterstitialPage::InterstitialPageRVHViewDelegate::StartDragging(
     const WebDropData& drop_data,
     WebDragOperationsMask allowed_operations,