Update extension events, routing, and delivery to use user gesture.

chrome/renderer/extensions/extension_dispatcher.cc

Index: chrome/renderer/extensions/extension_dispatcher.cc
diff --git a/chrome/renderer/extensions/extension_dispatcher.cc b/chrome/renderer/extensions/extension_dispatcher.cc
index 88ba39b0dfaf6e1455252b19273b875896d5bf31..a66644a86128da2cf62a9f2de4e2be3d1c67fb97 100644
--- a/chrome/renderer/extensions/extension_dispatcher.cc
+++ b/chrome/renderer/extensions/extension_dispatcher.cc
@@ -30,6 +30,7 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityPolicy.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebURLRequest.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebUserGestureIndicator.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "v8/include/v8.h"
@@ -46,6 +47,7 @@ using WebKit::WebDocument;
 using WebKit::WebFrame;
 using WebKit::WebSecurityPolicy;
 using WebKit::WebString;
+using WebKit::WebUserGestureIndicator;
 using WebKit::WebVector;
 using WebKit::WebView;
 using content::RenderThread;
@@ -157,7 +159,14 @@ void ExtensionDispatcher::OnSetFunctionNames(
 void ExtensionDispatcher::OnMessageInvoke(const std::string& extension_id,
                                           const std::string& function_name,
                                           const ListValue& args,
-                                          const GURL& event_url) {
+                                          const GURL& event_url,
+                                          bool user_caused) {
+  scoped_ptr<WebUserGestureIndicator> user_gesture;
+  if (user_caused) {
+    user_gesture.reset(
+        WebUserGestureIndicator::DefinitelyProcessingUserGesture());
+  }
+
   v8_context_set_.DispatchChromeHiddenMethod(
       extension_id, function_name, args, NULL, event_url);