Implement the frame id required for the web navigation api.

chrome/browser/tab_contents/provisional_load_details.h

Index: chrome/browser/tab_contents/provisional_load_details.h
diff --git a/chrome/browser/tab_contents/provisional_load_details.h b/chrome/browser/tab_contents/provisional_load_details.h
index 2073db0573f5497f44fa06c198bc1839eadb8c19..a9b0baada6d7f978deed735796034d792bc13d00 100644
--- a/chrome/browser/tab_contents/provisional_load_details.h
+++ b/chrome/browser/tab_contents/provisional_load_details.h
@@ -27,7 +27,8 @@ class ProvisionalLoadDetails {
                          bool in_page_navigation,
                          const GURL& url,
                          const std::string& security_info,
-                         bool is_filtered);
+                         bool is_filtered,
+                         long long frame_id);
   virtual ~ProvisionalLoadDetails() { }
 
   void set_error_code(int error_code) { error_code_ = error_code; }
@@ -56,6 +57,8 @@ class ProvisionalLoadDetails {
 
   bool is_content_filtered() const { return is_content_filtered_; }
 
+  long long frame_id() const { return frame_id_; }
+
  private:
   int error_code_;
   PageTransition::Type transition_type_;
@@ -67,6 +70,7 @@ class ProvisionalLoadDetails {
   int ssl_security_bits_;
   int ssl_connection_status_;
   bool is_content_filtered_;
+  long long frame_id_;
 
   DISALLOW_COPY_AND_ASSIGN(ProvisionalLoadDetails);
 };