Update to Chromium revision 304f01a1 (#358063)

- Improve ordering of CefLoadHandler callbacks. OnLoadingStateChange will
  be called before and after all calls to OnLoadStart and OnLoadEnd.
  OnLoadStart/OnLoadEnd calls will occur as matching pairs
  (see http://crbug.com/539952#c2).
- Remove the |requesting_url| argument to CefGeolocationHandler::
  OnCancelGeolocationPermission. Clients can use the |request_id| argument
  to track this information themselves.
- Fix a crash when loading the PDF extension in multiple browsers with a
  custom CefRequestContext (issue #1757).

include/capi/cef_geolocation_handler_capi.h

@@ -89,13 +89,12 @@ typedef struct _cef_geolocation_handler_t {
       struct _cef_geolocation_callback_t* callback);
 
   ///
-  // Called when a geolocation access request is canceled. |requesting_url| is
-  // the URL that originally requested permission and |request_id| is the unique
-  // ID for the permission request.
+  // Called when a geolocation access request is canceled. |request_id| is the
+  // unique ID for the permission request.
   ///
   void (CEF_CALLBACK *on_cancel_geolocation_permission)(
       struct _cef_geolocation_handler_t* self, struct _cef_browser_t* browser,
-      const cef_string_t* requesting_url, int request_id);
+      int request_id);
 } cef_geolocation_handler_t;
 
 

include/capi/cef_load_handler_capi.h

@@ -62,7 +62,8 @@ typedef struct _cef_load_handler_t {
   // Called when the loading state has changed. This callback will be executed
   // twice -- once when loading is initiated either programmatically or by user
   // action, and once when loading is terminated due to completion, cancellation
-  // of failure.
+  // of failure. It will be called before any calls to OnLoadStart and after all
+  // calls to OnLoadError and/or OnLoadEnd.
   ///
   void (CEF_CALLBACK *on_loading_state_change)(struct _cef_load_handler_t* self,
       struct _cef_browser_t* browser, int isLoading, int canGoBack,
@@ -73,9 +74,9 @@ typedef struct _cef_load_handler_t {
   // never be NULL -- call the is_main() function to check if this frame is the
   // main frame. Multiple frames may be loading at the same time. Sub-frames may
   // start or continue loading after the main frame load has ended. This
-  // function may not be called for a particular frame if the load request for
-  // that frame fails. For notification of overall browser load status use
-  // OnLoadingStateChange instead.
+  // function will always be called for all frames irrespective of whether the
+  // request completes successfully. For notification of overall browser load
+  // status use OnLoadingStateChange instead.
   ///
   void (CEF_CALLBACK *on_load_start)(struct _cef_load_handler_t* self,
       struct _cef_browser_t* browser, struct _cef_frame_t* frame);
@@ -86,7 +87,8 @@ typedef struct _cef_load_handler_t {
   // main frame. Multiple frames may be loading at the same time. Sub-frames may
   // start or continue loading after the main frame load has ended. This
   // function will always be called for all frames irrespective of whether the
-  // request completes successfully.
+  // request completes successfully. For notification of overall browser load
+  // status use OnLoadingStateChange instead.
   ///
   void (CEF_CALLBACK *on_load_end)(struct _cef_load_handler_t* self,
       struct _cef_browser_t* browser, struct _cef_frame_t* frame,

include/cef_geolocation_handler.h

@@ -82,14 +82,12 @@ class CefGeolocationHandler : public virtual CefBase {
   }
 
   ///
-  // Called when a geolocation access request is canceled. |requesting_url| is
-  // the URL that originally requested permission and |request_id| is the unique
-  // ID for the permission request.
+  // Called when a geolocation access request is canceled. |request_id| is the
+  // unique ID for the permission request.
   ///
   /*--cef()--*/
   virtual void OnCancelGeolocationPermission(
       CefRefPtr<CefBrowser> browser,
-      const CefString& requesting_url,
       int request_id) {
   }
 };

include/cef_load_handler.h

@@ -56,7 +56,8 @@ class CefLoadHandler : public virtual CefBase {
   // Called when the loading state has changed. This callback will be executed
   // twice -- once when loading is initiated either programmatically or by user
   // action, and once when loading is terminated due to completion, cancellation
-  // of failure.
+  // of failure. It will be called before any calls to OnLoadStart and after all
+  // calls to OnLoadError and/or OnLoadEnd.
   ///
   /*--cef()--*/
   virtual void OnLoadingStateChange(CefRefPtr<CefBrowser> browser,
@@ -69,8 +70,8 @@ class CefLoadHandler : public virtual CefBase {
   // never be empty -- call the IsMain() method to check if this frame is the
   // main frame. Multiple frames may be loading at the same time. Sub-frames may
   // start or continue loading after the main frame load has ended. This method
-  // may not be called for a particular frame if the load request for that frame
-  // fails. For notification of overall browser load status use
+  // will always be called for all frames irrespective of whether the request
+  // completes successfully. For notification of overall browser load status use
   // OnLoadingStateChange instead.
   ///
   /*--cef()--*/
@@ -83,7 +84,8 @@ class CefLoadHandler : public virtual CefBase {
   // main frame. Multiple frames may be loading at the same time. Sub-frames may
   // start or continue loading after the main frame load has ended. This method
   // will always be called for all frames irrespective of whether the request
-  // completes successfully.
+  // completes successfully. For notification of overall browser load status use
+  // OnLoadingStateChange instead.
   ///
   /*--cef()--*/
   virtual void OnLoadEnd(CefRefPtr<CefBrowser> browser,