Revert of Add drawer with state information

tools/viewer/sk_app/Window.h

Index: tools/viewer/sk_app/Window.h
diff --git a/tools/viewer/sk_app/Window.h b/tools/viewer/sk_app/Window.h
index 9ca4231c80d41f273d4fca9e5c767e0c62aaaaa8..65e1542e2cafe310c43e828193053da42804c17e 100644
--- a/tools/viewer/sk_app/Window.h
+++ b/tools/viewer/sk_app/Window.h
@@ -12,7 +12,6 @@
 #include "SkRect.h"
 #include "SkTouchGesture.h"
 #include "SkTypes.h"
-#include "SkJSONCPP.h"
 
 class SkCanvas;
 
@@ -28,7 +27,6 @@
 
     virtual void setTitle(const char*) = 0;
     virtual void show() = 0;
-    virtual void setUIState(const Json::Value& state) {}  // do nothing in default
 
     // Shedules an invalidation event for window if one is not currently pending.
     // Make sure that either onPaint or markInvalReceived is called when the client window consumes
@@ -112,8 +110,6 @@
     typedef bool(*OnKeyFunc)(Key key, InputState state, uint32_t modifiers, void* userData);
     typedef bool(*OnMouseFunc)(int x, int y, InputState state, uint32_t modifiers, void* userData);
     typedef bool(*OnTouchFunc)(int owner, InputState state, float x, float y, void* userData);
-    typedef void(*OnUIStateChangedFunc)(
-            const SkString& stateName, const SkString& stateValue, void* userData);
     typedef void(*OnPaintFunc)(SkCanvas*, void* userData);
 
     void registerCharFunc(OnCharFunc func, void* userData) {
@@ -141,16 +137,10 @@
         fTouchUserData = userData;
     }
 
-    void registerUIStateChangedFunc(OnUIStateChangedFunc func, void* userData) {
-        fUIStateChangedFunc = func;
-        fUIStateChangedUserData = userData;
-    }
-
     bool onChar(SkUnichar c, uint32_t modifiers);
     bool onKey(Key key, InputState state, uint32_t modifiers);
     bool onMouse(int x, int y, InputState state, uint32_t modifiers);
     bool onTouch(int owner, InputState state, float x, float y);  // multi-owner = multi-touch
-    void onUIStateChanged(const SkString& stateName, const SkString& stateValue);
     void onPaint();
     void onResize(uint32_t width, uint32_t height);
 
@@ -174,9 +164,6 @@
     void*        fMouseUserData;
     OnTouchFunc  fTouchFunc;
     void*        fTouchUserData;
-    OnUIStateChangedFunc
-                 fUIStateChangedFunc;
-    void*        fUIStateChangedUserData;
     OnPaintFunc  fPaintFunc;
     void*        fPaintUserData;