Modify hit test masks for tabs and tab close buttons

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 1deebf169e3f22aaabc3a1974b0f63e86c56423b..28b90b697ba743119d27561b343c60f6f1d26d22 100644
--- a/chrome/browser/ui/views/tabs/tab.h
+++ b/chrome/browser/ui/views/tabs/tab.h
@@ -130,6 +130,10 @@ class Tab : public gfx::AnimationDelegate,
  private:
   friend class TabTest;
   FRIEND_TEST_ALL_PREFIXES(TabTest, CloseButtonLayout);
+
+  friend class TabStripTest;
+  FRIEND_TEST_ALL_PREFIXES(TabStripTest, TabHitTestMaskWhenStacked);
+
   // The animation object used to swap the favicon with the sad tab icon.
   class FaviconCrashAnimation;
   class TabCloseButton;
@@ -171,7 +175,8 @@ class Tab : public gfx::AnimationDelegate,
   virtual void OnThemeChanged() OVERRIDE;
   virtual const char* GetClassName() const OVERRIDE;
   virtual bool HasHitTestMask() const OVERRIDE;
-  virtual void GetHitTestMask(gfx::Path* path) const OVERRIDE;
+  virtual void GetHitTestMask(HitTestSource source,
+                              gfx::Path* path) const OVERRIDE;
   virtual bool GetTooltipText(const gfx::Point& p,
                               string16* tooltip) const OVERRIDE;
   virtual bool GetTooltipTextOrigin(const gfx::Point& p,