Implemented declarative redirects to transparent image and empty document.

chrome/browser/extensions/api/declarative_webrequest/webrequest_action.h

Index: chrome/browser/extensions/api/declarative_webrequest/webrequest_action.h
diff --git a/chrome/browser/extensions/api/declarative_webrequest/webrequest_action.h b/chrome/browser/extensions/api/declarative_webrequest/webrequest_action.h
index 973a60e5d7d642dad63f1b8ab9b53f327575768f..019d8944a625b9ba955c307193d5e8092989b1ac 100644
--- a/chrome/browser/extensions/api/declarative_webrequest/webrequest_action.h
+++ b/chrome/browser/extensions/api/declarative_webrequest/webrequest_action.h
@@ -43,7 +43,9 @@ class WebRequestAction {
   // Type identifiers for concrete WebRequestActions.
   enum Type {
     ACTION_CANCEL_REQUEST,
-    ACTION_REDIRECT_REQUEST
+    ACTION_REDIRECT_REQUEST,
+    ACTION_REDIRECT_TO_TRANSPARENT_IMAGE,
+    ACTION_REDIRECT_TO_EMPTY_DOCUMENT,
   };
 
   WebRequestAction();
@@ -151,6 +153,45 @@ class WebRequestRedirectAction : public WebRequestAction {
   DISALLOW_COPY_AND_ASSIGN(WebRequestRedirectAction);
 };
 
+// Action that instructs to redirect a network request to a transparent image.
+class WebRequestRedirectToTransparentImageAction : public WebRequestAction {
+ public:
+  explicit WebRequestRedirectToTransparentImageAction();
+  virtual ~WebRequestRedirectToTransparentImageAction();
+
+  // Implementation of WebRequestAction:
+  virtual int GetStages() const OVERRIDE;
+  virtual Type GetType() const OVERRIDE;
+  virtual LinkedPtrEventResponseDelta CreateDelta(
+      net::URLRequest* request,
+      RequestStages request_stage,
+      const std::string& extension_id,
+      const base::Time& extension_install_time) const OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WebRequestRedirectToTransparentImageAction);
+};
+
+
+// Action that instructs to redirect a network request to an empty document.
+class WebRequestRedirectToEmptyDocumentAction : public WebRequestAction {
+ public:
+  explicit WebRequestRedirectToEmptyDocumentAction();
+  virtual ~WebRequestRedirectToEmptyDocumentAction();
+
+  // Implementation of WebRequestAction:
+  virtual int GetStages() const OVERRIDE;
+  virtual Type GetType() const OVERRIDE;
+  virtual LinkedPtrEventResponseDelta CreateDelta(
+      net::URLRequest* request,
+      RequestStages request_stage,
+      const std::string& extension_id,
+      const base::Time& extension_install_time) const OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WebRequestRedirectToEmptyDocumentAction);
+};
+
 // TODO(battre) Implement further actions:
 // Redirect to constant url, Redirect by RegEx, Set header, Remove header, ...