Added reload drop-down menu for the Reload button on Linux when in the DevTools mode.

chrome/browser/ui/gtk/reload_button_gtk.h

Index: chrome/browser/ui/gtk/reload_button_gtk.h
diff --git a/chrome/browser/ui/gtk/reload_button_gtk.h b/chrome/browser/ui/gtk/reload_button_gtk.h
index 2dbe5ce2d78d09e25f24f809e43129c0ff01883f..d46cc840d5c5df831f165a4f9f51b0d52c5339e3 100644
--- a/chrome/browser/ui/gtk/reload_button_gtk.h
+++ b/chrome/browser/ui/gtk/reload_button_gtk.h
@@ -11,8 +11,10 @@
 #include "base/compiler_specific.h"
 #include "base/timer.h"
 #include "chrome/browser/ui/gtk/custom_button.h"
+#include "chrome/browser/ui/gtk/menu_gtk.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+#include "ui/base/models/simple_menu_model.h"
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/base/gtk/owned_widget_gtk.h"
 
@@ -20,7 +22,9 @@ class Browser;
 class GtkThemeService;
 class LocationBarViewGtk;
 
-class ReloadButtonGtk : public content::NotificationObserver {
+class ReloadButtonGtk : public content::NotificationObserver,
+                        MenuGtk::Delegate,
+                        public ui::SimpleMenuModel::Delegate {
  public:
   enum Mode { MODE_RELOAD = 0, MODE_STOP };
 
@@ -38,6 +42,18 @@ class ReloadButtonGtk : public content::NotificationObserver {
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  // Provide MenuGtk::Delegate implementation.
+  virtual void StoppedShowing() OVERRIDE;
+
+  // Provide SimpleMenuModel::Delegate implementation.
+  virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
+  virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
+  virtual bool IsCommandIdVisible(int command_id) const OVERRIDE;
+  virtual bool GetAcceleratorForCommandId(
+     int command_id,
+     ui::Accelerator* accelerator) OVERRIDE;
+  virtual void ExecuteCommand(int command_id) OVERRIDE;
+
  private:
   friend class ReloadButtonGtkTest;
 
@@ -55,11 +71,35 @@ class ReloadButtonGtk : public content::NotificationObserver {
                        gboolean,
                        GtkTooltip*);
 
+  // Starts a timer to show the dropdown menu.
+  CHROMEGTK_CALLBACK_1(ReloadButtonGtk,
+                       gboolean,
+                       OnButtonPress,
+                       GdkEventButton*);
+
+  // If there is a timer to show the dropdown menu, and the mouse has moved
+  // sufficiently down the screen, cancel the timer and immediately show the
+  // menu.
+  CHROMEGTK_CALLBACK_1(ReloadButtonGtk,
+                       gboolean,
+                       OnMouseMove,
+                       GdkEventMotion*);
+
   void UpdateThemeButtons();
 
   void OnDoubleClickTimer();
   void OnStopToReloadTimer();
 
+  // Shows the dropdown menu.
+  void ShowReloadMenu(int button, guint32 event_time);
+
+  // Do actual reload. command == 0, indicates default dehaviour.
+  void DoReload(int command);
+
+  // Indicates if reload menu is currently enabled.
+  bool ReloadMenuEnabled();
+  void ClearCache();
+
   base::OneShotTimer<ReloadButtonGtk> double_click_timer_;
   base::OneShotTimer<ReloadButtonGtk> stop_to_reload_timer_;
 
@@ -89,6 +129,16 @@ class ReloadButtonGtk : public content::NotificationObserver {
   base::TimeDelta double_click_timer_delay_;
   base::TimeDelta stop_to_reload_timer_delay_;
 
+  // The y position of the last mouse down event.
+  int y_position_of_last_press_;
+  base::WeakPtrFactory<ReloadButtonGtk> weak_factory_;
+  // The menu gets reset every time it is shown.
+  scoped_ptr<MenuGtk> menu_;
+  // The dropdown menu model.
+  scoped_ptr<ui::SimpleMenuModel> menu_model_;
+  // Indicates if menu is currently shown.
+  bool menu_visible_;
+
   // TESTING ONLY
   // True if we should pretend the button is hovered.
   bool testing_mouse_hovered_;