alternate ntp (cros/partial-win): add tab-related stuff and toolbar/tab background change

chrome/browser/ui/views/tabs/tab.h

Index: chrome/browser/ui/views/tabs/tab.h
diff --git a/chrome/browser/ui/views/tabs/tab.h b/chrome/browser/ui/views/tabs/tab.h
index 85787fcdb07ed57196b512a5ef680de6e0275e9a..2d9c29888e2952e82917505ae710994941f8460c 100644
--- a/chrome/browser/ui/views/tabs/tab.h
+++ b/chrome/browser/ui/views/tabs/tab.h
@@ -79,10 +79,12 @@ class Tab : public BaseTab {
   virtual void OnMouseMoved(const views::MouseEvent& event) OVERRIDE;
 
   // Paint various portions of the Tab
+  gfx::ImageSkia* GetTabBackgroundImage(chrome::search::Mode::Type mode) const;
   void PaintTabBackground(gfx::Canvas* canvas);
   void PaintInactiveTabBackgroundWithTitleChange(gfx::Canvas* canvas);
   void PaintInactiveTabBackground(gfx::Canvas* canvas);
-  void PaintActiveTabBackground(gfx::Canvas* canvas);
+  void PaintActiveTabBackground(gfx::Canvas* canvas,
+                                gfx::ImageSkia* tab_background);
 
   // Returns the number of favicon-size elements that can fit in the tab's
   // current size.