Bug 1306296 - Add shortcut key to Simplify Page feature. r=mconley

toolkit/components/printing/content/printPreviewBindings.xml

@@ -89,6 +89,7 @@
 
       <xul:toolbarseparator class="toolbarseparator-primary"/>
       <xul:checkbox label="&simplifyPage.label;" checked="false" disabled="true"
+        accesskey="&simplifyPage.accesskey;"
         tooltiptext-disabled="&simplifyPage.disabled.tooltip;"
         tooltiptext-enabled="&simplifyPage.enabled.tooltip;"
         oncommand="this.parentNode.simplify();"/>

toolkit/locales/en-US/chrome/global/printPreview.dtd

@@ -33,6 +33,7 @@
 <!ENTITY ShrinkToFit.label    "Shrink To Fit">
 <!ENTITY customPrompt.title   "Custom Scale…">
 <!ENTITY simplifyPage.label   "Simplify Page">
+<!ENTITY simplifyPage.accesskey "i">
 <!ENTITY simplifyPage.enabled.tooltip  "Change layout for easier reading">
 <!ENTITY simplifyPage.disabled.tooltip "This page cannot be automatically simplified">