added CTRL+Click and SHIFT+Click handler for context menu, Back and Forward.

chrome/browser/ui/gtk/gtk_util.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_GTK_GTK_UTIL_H_
 #define CHROME_BROWSER_UI_GTK_GTK_UTIL_H_
 #pragma once
 
 #include <gtk/gtk.h>
 #include <string>
@@ skipping 24 matching lines @@
 #define GDK_COLOR_RGB(r, g, b) {0, r * kSkiaToGDKMultiplier, \
         g * kSkiaToGDKMultiplier, b * kSkiaToGDKMultiplier}
 
 namespace event_utils {
 
 // Translates event flags into what kind of disposition they represent.
 // For example, a middle click would mean to open a background tab.
 // event_flags are the state in the GdkEvent structure.
 WindowOpenDisposition DispositionFromEventFlags(guint state);
 
+// Translates event flags into platform independent event flags.
+int GetEventFlagsFromGdkState(guint state);
+
 }  // namespace event_utils
 
 namespace gtk_util {
 
 extern const GdkColor kGdkWhite;
 extern const GdkColor kGdkGray;
 extern const GdkColor kGdkBlack;
 extern const GdkColor kGdkGreen;
 
 // Constants relating to the layout of dialog windows:
@@ skipping 316 matching lines @@
 void ApplyMessageDialogQuirks(GtkWidget* dialog);
 
 // Performs Cut/Copy/Paste operation on the |window|.
 void DoCut(BrowserWindow* window);
 void DoCopy(BrowserWindow* window);
 void DoPaste(BrowserWindow* window);
 
 }  // namespace gtk_util
 
 #endif  // CHROME_BROWSER_UI_GTK_GTK_UTIL_H_