Change all ConvertPointTo* methods to use gfx::Point instead of CPoint....

base/gfx/point.h

Index: base/gfx/point.h
===================================================================
--- base/gfx/point.h	(revision 3347)
+++ base/gfx/point.h	(working copy)
@@ -45,6 +45,11 @@
   void set_x(int x) { x_ = x; }
   void set_y(int y) { y_ = y; }
 
+  void Offset(int delta_x, int delta_y) {
+    x_ += delta_x;
+    y_ += delta_y;
+  }
+
   bool operator==(const Point& rhs) const {
     return x_ == rhs.x_ && y_ == rhs.y_;
   }