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

chrome/test/data/extensions/api_test/window_update/show_state/test.html

Index: chrome/test/data/extensions/api_test/window_update/show_state/test.html
diff --git a/chrome/test/data/extensions/api_test/window_update/show_state/test.html b/chrome/test/data/extensions/api_test/window_update/show_state/test.html
index d46353192e4ef60d7db192f56cf6d2f4700088c7..996f890cad6a570dfdb8d4cdf5bc7ba9dc090985 100644
--- a/chrome/test/data/extensions/api_test/window_update/show_state/test.html
+++ b/chrome/test/data/extensions/api_test/window_update/show_state/test.html
@@ -58,7 +58,9 @@ function minimizeWindow(theWindow) {
 }
 
 function testWindowState(windowType) {
-  chrome.windows.create({'url': 'hello.html', 'type': windowType},
+  // Specifying size prevents 'panel' windows from computing size asynchronously. It ensures
+  // panel sizes stay fixed through the test.
+  chrome.windows.create({'url': 'hello.html', 'type': windowType, 'width':100, 'height':100 },
     pass(minimizeWindow));
 }