Windows: Don't try to center a popup over a parent window when the popup is bigger than the parent.

ui/base/win/hwnd_util.cc

Index: ui/base/win/hwnd_util.cc
===================================================================
--- ui/base/win/hwnd_util.cc	(revision 129350)
+++ ui/base/win/hwnd_util.cc	(working copy)
@@ -13,7 +13,7 @@
 
 namespace {
 
-// Adjust the window to fit, returning true if the window was resized or moved.
+// Adjust the window to fit.
 void AdjustWindowToFit(HWND hwnd, const RECT& bounds, bool fit_to_monitor) {
   if (fit_to_monitor) {
     // Get the monitor.
@@ -134,11 +134,19 @@
       NOTREACHED() << "Unable to get default monitor";
     }
   }
-  window_bounds.left = center_bounds.left +
-      (center_bounds.right - center_bounds.left - pref.width()) / 2;
+
+  window_bounds.left = center_bounds.left;
+  if (pref.width() < (center_bounds.right - center_bounds.left)) {
+    window_bounds.left +=
+        (center_bounds.right - center_bounds.left - pref.width()) / 2;
+  }
   window_bounds.right = window_bounds.left + pref.width();
-  window_bounds.top = center_bounds.top +
-      (center_bounds.bottom - center_bounds.top - pref.height()) / 2;
+
+  window_bounds.top = center_bounds.top;
+  if (pref.height() < (center_bounds.bottom - center_bounds.top)) {
+    window_bounds.top +=
+        (center_bounds.bottom - center_bounds.top - pref.height()) / 2;
+  }
   window_bounds.bottom = window_bounds.top + pref.height();
 
   // If we're centering a child window, we are positioning in client