Bug 701618 - Remove use of min-width to prevent assertion when entering DOM full-screen mode. r=dao

browser/base/content/browser.css

@@ -362,8 +362,8 @@ window[chromehidden~="toolbar"] toolbar:not(.toolbar-primary):not(.chromeclass-m
   position: fixed;
   top: 0;
   left: 0;
-  min-width: 100%;
-  min-height: 100%;
+  width: 100%;
+  height: 100%;
 }
 
 #full-screen-warning-container[fade-warning-out] {

browser/base/content/browser.xul

@@ -976,7 +976,7 @@
   </hbox>
 
   <hbox id="full-screen-warning-container" hidden="true" fadeout="true">
-    <hbox style="min-width: 100%;" pack="center"> <!-- Inner hbox needed due to bug 579776. -->
+    <hbox style="width: 100%;" pack="center"> <!-- Inner hbox needed due to bug 579776. -->
       <hbox id="full-screen-warning-message">
         <description id="full-screen-warning-text" value="&domFullScreenWarning.label;"></description>
       </hbox>