Remove panel size limit when user resizes it.

chrome/browser/ui/panels/panel_resize_controller.cc

Index: chrome/browser/ui/panels/panel_resize_controller.cc
diff --git a/chrome/browser/ui/panels/panel_resize_controller.cc b/chrome/browser/ui/panels/panel_resize_controller.cc
index 2c0ee25fc741dd844923d434e0e258c92afa1ad3..92da0a9cde28c5fbf142910e2ea0ae29c0fc1259 100644
--- a/chrome/browser/ui/panels/panel_resize_controller.cc
+++ b/chrome/browser/ui/panels/panel_resize_controller.cc
@@ -88,10 +88,22 @@ void PanelResizeController::Resize(const gfx::Point& mouse_location) {
                       mouse_location_at_start_.y() - mouse_location.y(), 0));
   }
 
-  // Give the panel a chance to adjust the bounds before setting them.
-  gfx::Size size = bounds.size();
-  resizing_panel_->ClampSize(&size);
-  bounds.set_size(size);
+  // Update the max size of the panel so it's never smaller then the actual
+  // panel's size. Note that even if the user resizes the panel smaller later,
+  // the increased max size will still be in effect. Since it's not possible
+  // currently to switch the panel back to autosizing from user-resizable, it
+  // should not be a problem.
+  gfx::Size max_panel_size = resizing_panel_->max_size();
+  if (max_panel_size.width() < bounds.width())
+    max_panel_size.set_width(bounds.width());
+  if (max_panel_size.height() < bounds.height())
+    max_panel_size.set_height(bounds.height());
+
+  resizing_panel_->SetSizeRange(resizing_panel_->min_size(), max_panel_size);
+
+  // This effectively only clamps using the min size, since the max_size was
+  // updated above.
+  bounds.set_size(resizing_panel_->ClampSize(bounds.size()));
 
   if (ResizingLeft(sides_resized_)) {
     bounds.set_x(bounds_at_start_.x() -