Put 'DOM Source' in the title of the window of View Selection Source to remind users that the source is generated from the DOM, b=190947, r=doron, sr=bzbarsky

suite/browser/viewPartialSource.xul

@@ -52,10 +52,7 @@
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         onload="onLoadViewPartialSource();"
         contenttitlesetting="false"
-        title="&mainWindow.title;" 
+        title="&viewPartialSourceWindow.title;&mainWindow.titlemodifierseparator;&mainWindow.titlemodifier;"
-        titlemodifier="&mainWindow.titlemodifier;" 
-        titlepreface=""
-        titlemenuseparator ="&mainWindow.titlemodifierseparator;"  
         windowtype="navigator:view-source"
         width="500" height="300"
         screenX="10" screenY="10"

suite/locales/en-US/chrome/browser/navigator.dtd

@@ -9,7 +9,6 @@
 <!ENTITY mainWindow.titlemodifier "&brandShortName; {&buildId.label;}"> 
 <!-- LOCALIZATION NOTE (mainWindow.titlemodifiermenuseparator): DONT_TRANSLATE -->
 <!ENTITY mainWindow.titlemodifiermenuseparator " - ">
-<!ENTITY viewsourcetitle.preface "Source for: ">
 
 <!ENTITY nothingAvailable.label "(Nothing Available)">
 

suite/locales/en-US/chrome/browser/viewSource.dtd

@@ -8,6 +8,8 @@
 <!ENTITY mainWindow.titlemodifierseparator " - ">
 <!ENTITY mainWindow.preface "Source of: ">
 
+<!ENTITY viewPartialSourceWindow.title "DOM Source">
+
 <!ENTITY menu_wrapLongLines.title "Wrap Long Lines"> 
 <!ENTITY menu_wrapLongLines.accesskey "W">