ui: Make gfx::Point::Scale() mutate the class, similar to gfx::Rect.

webkit/plugins/ppapi/ppb_graphics_2d_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "webkit/plugins/ppapi/ppb_graphics_2d_impl.h"
 
 #include <iterator>
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
@@ skipping 631 matching lines @@
     return true;
 
   gfx::Rect original_rect = *op_rect;
   // Take the enclosing rectangle after scaling so a rectangle scaled down then
   // scaled back up by the inverse scale would fully contain the entire area
   // affected by the original rectangle.
   *op_rect = gfx::ToEnclosingRect(gfx::ScaleRect(*op_rect, scale));
   if (delta) {
     gfx::Point original_delta = *delta;
     float inverse_scale = 1.0f / scale;
-    *delta = gfx::ToFlooredPoint(delta->Scale(scale));
+    *delta = gfx::ToFlooredPoint(gfx::ScalePoint(*delta, scale));
 
     gfx::Rect inverse_scaled_rect =
         gfx::ToEnclosingRect(gfx::ScaleRect(*op_rect, inverse_scale));
     if (original_rect != inverse_scaled_rect)
       return false;
     gfx::Point inverse_scaled_point =
-        gfx::ToFlooredPoint(delta->Scale(inverse_scale));
+        gfx::ToFlooredPoint(gfx::ScalePoint(*delta, inverse_scale));
     if (original_delta != inverse_scaled_point)
       return false;
   }
 
   return true;
 }
 
 void PPB_Graphics2D_Impl::ExecutePaintImageData(PPB_ImageData_Impl* image,
                                                 int x, int y,
                                                 const gfx::Rect& src_rect,
@@ skipping 87 matching lines @@
 }
 
 bool PPB_Graphics2D_Impl::HasPendingFlush() const {
   return !unpainted_flush_callback_.is_null() ||
          !painted_flush_callback_.is_null() ||
          offscreen_flush_pending_;
 }
 
 }  // namespace ppapi
 }  // namespace webkit