Reduce minimum size of Panels to allow 1-text-line tight autosize.

chrome/browser/ui/panels/panel_manager.cc

Index: chrome/browser/ui/panels/panel_manager.cc
diff --git a/chrome/browser/ui/panels/panel_manager.cc b/chrome/browser/ui/panels/panel_manager.cc
index f9afd8c6df36e38022ba2655d6ec0cd278b8e1f8..8253d3a5b38bb48addf4769b2c414b27c10e8cdb 100644
--- a/chrome/browser/ui/panels/panel_manager.cc
+++ b/chrome/browser/ui/panels/panel_manager.cc
@@ -26,10 +26,16 @@ const size_t kInvalidPanelIndex = static_cast<size_t>(-1);
 // elements located on the bottom right of windows.
 const int kRightScreenEdgeSpacingWidth = 24;
 
-// Default width and height of a panel.
+// Default width and height of a panel, including non-client area.
 const int kPanelDefaultWidth = 240;
 const int kPanelDefaultHeight = 290;
 
+// Absolute minimum width and height for panels, including non-client area.
+// Should only be big enough to accomodate a close button on the reasonably
+// recognisable titlebar.
+const int kPanelMinWidth = 100;
+const int kPanelMinHeight = 20;
+
 // Maxmium width and height of a panel based on the factor of the working
 // area.
 const double kPanelMaxWidthFactor = 0.35;