Refactor chrome.pageCapture to use JSON schema compiler

chrome/browser/extensions/api/page_capture/page_capture_api.h

Index: chrome/browser/extensions/api/page_capture/page_capture_api.h
diff --git a/chrome/browser/extensions/api/page_capture/page_capture_api.h b/chrome/browser/extensions/api/page_capture/page_capture_api.h
index cb9f518ef5670b2f48d6d57c333f0126de4ab058..989dced56158a4fac3fe858cffcbe317008865cc 100644
--- a/chrome/browser/extensions/api/page_capture/page_capture_api.h
+++ b/chrome/browser/extensions/api/page_capture/page_capture_api.h
@@ -9,6 +9,7 @@
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/extension_function.h"
+#include "chrome/common/extensions/api/page_capture.h"
 #include "webkit/blob/shareable_file_reference.h"
 
 class FilePath;
@@ -52,7 +53,7 @@ class PageCaptureSaveAsMHTMLFunction : public AsyncExtensionFunction {
   // Returns the WebContents we are associated with, NULL if it's been closed.
   content::WebContents* GetWebContents();
 
-  int tab_id_;
+  scoped_ptr<extensions::api::page_capture::SaveAsMHTML::Params> params_;
 
   // The path to the temporary file containing the MHTML data.
   FilePath mhtml_path_;