ui: Add IsExpressibleAsRect() method to RectF

ui/gfx/rect_f.cc

Index: ui/gfx/rect_f.cc
diff --git a/ui/gfx/rect_f.cc b/ui/gfx/rect_f.cc
index ffa9faac1a53d73c5ea3974e33f3743afb9f5862..fa4e99d17cbd7f12fdfe60ef605f467d053c7630 100644
--- a/ui/gfx/rect_f.cc
+++ b/ui/gfx/rect_f.cc
@@ -10,6 +10,7 @@
 #include "base/stringprintf.h"
 #include "ui/gfx/insets_f.h"
 #include "ui/gfx/rect_base_impl.h"
+#include "ui/gfx/safe_integer_conversions.h"
 
 namespace gfx {
 
@@ -39,6 +40,12 @@ RectF::RectF(const gfx::PointF& origin, const gfx::SizeF& size)
 
 RectF::~RectF() {}
 
+bool RectF::IsExpressibleAsRect() const {
+  return IsExpressibleAsInt(x()) && IsExpressibleAsInt(y()) &&
+      IsExpressibleAsInt(width()) && IsExpressibleAsInt(height()) &&
+      IsExpressibleAsInt(right()) && IsExpressibleAsInt(bottom());
+}
+
 std::string RectF::ToString() const {
   return base::StringPrintf("%s %s",
                             origin().ToString().c_str(),