aura: Remove WindowTreeHost::QueryMouseLocation().

ui/aura/window_tree_host.h

Index: ui/aura/window_tree_host.h
diff --git a/ui/aura/window_tree_host.h b/ui/aura/window_tree_host.h
index 8e9bbd4cc526fd9981861db65bae61953a272892..2c48d79a0df4963c67ba7e0890631ea0806db6c9 100644
--- a/ui/aura/window_tree_host.h
+++ b/ui/aura/window_tree_host.h
@@ -135,14 +135,6 @@ class AURA_EXPORT WindowTreeHost {
   // Releases OS capture of the root window.
   virtual void ReleaseCapture() = 0;
 
-  // Queries the mouse's current position relative to the host window and sets
-  // it in |location_return|. Returns true if the cursor is within the host
-  // window. The position set to |location_return| is constrained within the
-  // host window. If the cursor is disabled, returns false and (0, 0) is set to
-  // |location_return|.
-  // This method is expensive, instead use gfx::Screen::GetCursorScreenPoint().
-  virtual bool QueryMouseLocation(gfx::Point* location_return) = 0;
-
   // Posts |native_event| to the platform's event queue.
   virtual void PostNativeEvent(const base::NativeEvent& native_event) = 0;
 
@@ -177,6 +169,8 @@ class AURA_EXPORT WindowTreeHost {
   virtual void OnCursorVisibilityChangedNative(bool show) = 0;
 
  private:
+  friend class WindowTreeHostTestApi;
+
   // Moves the cursor to the specified location. This method is internally used
   // by MoveCursorTo() and MoveCursorToHostLocation().
   void MoveCursorToInternal(const gfx::Point& root_location,
@@ -196,6 +190,7 @@ class AURA_EXPORT WindowTreeHost {
 
   // Last cursor set.  Used for testing.
   gfx::NativeCursor last_cursor_;
+  gfx::Point last_cursor_request_position_in_host_;
 
   scoped_ptr<ui::ViewProp> prop_;