DevTools: Do not close devtools if there are dirty files in workspace

chrome/browser/devtools/devtools_window.h

Index: chrome/browser/devtools/devtools_window.h
diff --git a/chrome/browser/devtools/devtools_window.h b/chrome/browser/devtools/devtools_window.h
index e3b2e90525e6e6effd06f68c155c630c8d8cfe73..e3cfd7df898953198c55ee615122e57e395b4a37 100644
--- a/chrome/browser/devtools/devtools_window.h
+++ b/chrome/browser/devtools/devtools_window.h
@@ -54,6 +54,12 @@ enum DevToolsDockSide {
   DEVTOOLS_DOCK_SIDE_MINIMIZED
 };
 
+enum DevToolsClosingTarget {
+  DEVTOOLS_CLOSING_TARGET_NONE = 0,
+  DEVTOOLS_CLOSING_TARGET_DEVTOOLS,
+  DEVTOOLS_CLOSING_TARGET_INSPECTED_PAGE
+};
+
 class DevToolsWindow : private content::NotificationObserver,
                        private content::WebContentsDelegate,
                        private content::DevToolsFrontendHostDelegate,
@@ -67,6 +73,8 @@ class DevToolsWindow : private content::NotificationObserver,
 
   static std::string GetDevToolsWindowPlacementPrefKey();
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
+  static DevToolsWindow* GetInstanceForInspectedTab(
+      content::WebContents* inspected_tab);
   static DevToolsWindow* GetDockedInstanceForInspectedTab(
       content::WebContents* inspected_tab);
   static bool IsDevToolsWindow(content::RenderViewHost* window_rvh);
@@ -125,6 +133,10 @@ class DevToolsWindow : private content::NotificationObserver,
 
   void Show(DevToolsToggleAction action);
 
+  static void HandleBeforeUnload(content::WebContents*, bool, bool*);
+  bool InspectedPageWillClose();
+  void InspectedPageCancelClose();
+
  private:
   friend class DevToolsControllerTest;
 
@@ -166,6 +178,9 @@ class DevToolsWindow : private content::NotificationObserver,
                               bool user_gesture,
                               bool* was_blocked) OVERRIDE;
   virtual void CloseContents(content::WebContents* source) OVERRIDE;
+  virtual void BeforeUnloadFired(content::WebContents* tab,
+                                 bool proceed,
+                                 bool* proceed_to_fire_unload) OVERRIDE;
   virtual bool PreHandleKeyboardEvent(
       content::WebContents* source,
       const content::NativeWebKeyboardEvent& event,
@@ -188,6 +203,7 @@ class DevToolsWindow : private content::NotificationObserver,
 
   // DevToolsEmbedderMessageDispatcher::Delegate overrides:
   virtual void ActivateWindow() OVERRIDE;
+  virtual void ActivateContents(content::WebContents* contents) OVERRIDE;
   virtual void CloseWindow() OVERRIDE;
   virtual void MoveWindow(int x, int y) OVERRIDE;
   virtual void SetDockSide(const std::string& side) OVERRIDE;
@@ -269,6 +285,8 @@ class DevToolsWindow : private content::NotificationObserver,
   int width_;
   int height_;
   DevToolsDockSide dock_side_before_minimized_;
+  DevToolsClosingTarget closing_target_;
+  bool inspected_page_is_closing_;
 
   scoped_ptr<DevToolsEmbedderMessageDispatcher> embedder_message_dispatcher_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsWindow);