Handle large rects better.

ui/gfx/geometry/rect.h

Index: ui/gfx/geometry/rect.h
diff --git a/ui/gfx/geometry/rect.h b/ui/gfx/geometry/rect.h
index 8c37e8eeabd11cafdc2c0f43cad20bbac1f9f0f3..a2e1e124c56c19e97a16a7c73de89e464bbce556 100644
--- a/ui/gfx/geometry/rect.h
+++ b/ui/gfx/geometry/rect.h
@@ -110,6 +110,8 @@ class GFX_EXPORT Rect {
     set_height(height);
   }
 
+  void SetByBounds(int left, int top, int right, int bottom);

[danakj, 2017/03/29 19:00:47]

I see what you're saying about the comment that was here. Maybe we can just make
it a bit more clear if you want, I propose:

// Use in place of SetRect() when you know the edges of the rectangle instead of
the dimensions, rather than trying to determine the width/height yourself. This
safely handles cases where the width/height would overflow.

[danakj, 2017/03/29 20:50:35]

Idk if u didn't see this also, so in case you want it.

[Peter Mayo, 2017/03/29 21:10:12]

I didn't.  I like it - added.

+
   // Shrink the rectangle by a horizontal and vertical distance on all sides.
   void Inset(int horizontal, int vertical) {
     Inset(horizontal, vertical, horizontal, vertical);