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

chrome/renderer/chrome_render_view_observer.cc

Index: chrome/renderer/chrome_render_view_observer.cc
diff --git a/chrome/renderer/chrome_render_view_observer.cc b/chrome/renderer/chrome_render_view_observer.cc
index 712f1dce4d1468ea875a1b4d6bd35507fcf5c9b3..183c6882e84ecd7db92f1bba90b3465b4c2efaa4 100644
--- a/chrome/renderer/chrome_render_view_observer.cc
+++ b/chrome/renderer/chrome_render_view_observer.cc
@@ -323,14 +323,18 @@ bool ChromeRenderViewObserver::allowScriptExtension(
 
 bool ChromeRenderViewObserver::allowReadFromClipboard(WebFrame* frame,
                                                      bool default_value) {
-  // TODO(dcheng): implement me
-  return default_value;
+  bool allowed = false;
+  Send(new ViewHostMsg_CanTriggerClipboardRead(
+      routing_id(), frame->url(), &allowed));
+  return allowed;
 }
 
 bool ChromeRenderViewObserver::allowWriteToClipboard(WebFrame* frame,
                                                     bool default_value) {
-  // TODO(dcheng): implement me
-  return default_value;
+  bool allowed = false;
+  Send(new ViewHostMsg_CanTriggerClipboardWrite(
+      routing_id(), frame->url(), &allowed));
+  return allowed;
 }
 
 void ChromeRenderViewObserver::didNotAllowPlugins(WebFrame* frame) {