Make panel adjust bounds per preferred size change notification on Windows.

chrome/browser/ui/panels/panel_browser_view.cc

Index: chrome/browser/ui/panels/panel_browser_view.cc
===================================================================
--- chrome/browser/ui/panels/panel_browser_view.cc	(revision 98900)
+++ chrome/browser/ui/panels/panel_browser_view.cc	(working copy)
@@ -37,7 +37,7 @@
   : BrowserView(browser),
     panel_(panel),
     bounds_(bounds),
-    original_height_(bounds.height()),
+    restored_height_(bounds.height()),
     closed_(false),
     focused_(false),
     mouse_pressed_(false),
@@ -82,8 +82,13 @@
 }
 
 void PanelBrowserView::SetBounds(const gfx::Rect& bounds) {
+  if (bounds_ == bounds)
+    return;
   bounds_ = bounds;
 
+  if (panel_->expansion_state() == Panel::EXPANDED)
+    restored_height_ = bounds.height();
+
   // No animation if the panel is being dragged.
   if (mouse_dragging_) {
     ::BrowserView::SetBounds(bounds);
@@ -187,7 +192,7 @@
   int height;
   switch (expansion_state) {
     case Panel::EXPANDED:
-      height = original_height_;
+      height = restored_height_;
       break;
     case Panel::TITLE_ONLY:
       height = GetFrameView()->NonClientTopBorderHeight();
@@ -203,7 +208,7 @@
       break;
     default:
       NOTREACHED();
-      height = original_height_;
+      height = restored_height_;
       break;
   }
 
@@ -311,6 +316,18 @@
   HandleKeyboardEvent(event);
 }
 
+gfx::Size PanelBrowserView::GetNonClientAreaExtent() const {
+  return GetFrameView()->NonClientAreaSize();
+}
+
+int PanelBrowserView::GetRestoredHeight() const {
+  return restored_height_;
+}
+
+void PanelBrowserView::SetRestoredHeight(int height) {
+  restored_height_ = height;
+}
+
 Browser* PanelBrowserView::GetPanelBrowser() const {
   return browser();
 }