For NavQuirks we need to set the appropriate font for buttons/selects or for text and textarea

If these fonts are set in the html.css or quirk.css they cannot be overriden
We now use the CSS3 font names and for NavQuirks we adjust the fonts to match Nav 4.x
The change is to give field fonts monospace instead of sans-serif
Bug 44656 r=dcone

content/html/style/src/nsCSSStyleRule.cpp

@@ -1654,9 +1654,10 @@ MapDeclarationFontInto(nsICSSDeclaration* aDeclaration,
 
           // NavQuirks uses sans-serif instead of whatever the native font is
           if (eCompatibility_NavQuirks == mode) {
-            if (sysID == eSystemAttr_Font_Button ||
-                sysID == eSystemAttr_Font_Caption ||
-                sysID == eSystemAttr_Font_Field) {
+            if (sysID == eSystemAttr_Font_Field) {
+              font->mFont.name.AssignWithConversion("monospace");
+            } else if (sysID == eSystemAttr_Font_Button ||
+                       sysID == eSystemAttr_Font_Caption) {
               font->mFont.name.AssignWithConversion("sans-serif");
             }
           }

layout/html/style/src/nsCSSStyleRule.cpp

@@ -1654,9 +1654,10 @@ MapDeclarationFontInto(nsICSSDeclaration* aDeclaration,
 
           // NavQuirks uses sans-serif instead of whatever the native font is
           if (eCompatibility_NavQuirks == mode) {
-            if (sysID == eSystemAttr_Font_Button ||
-                sysID == eSystemAttr_Font_Caption ||
-                sysID == eSystemAttr_Font_Field) {
+            if (sysID == eSystemAttr_Font_Field) {
+              font->mFont.name.AssignWithConversion("monospace");
+            } else if (sysID == eSystemAttr_Font_Button ||
+                       sysID == eSystemAttr_Font_Caption) {
               font->mFont.name.AssignWithConversion("sans-serif");
             }
           }

layout/style/nsCSSStyleRule.cpp

@@ -1654,9 +1654,10 @@ MapDeclarationFontInto(nsICSSDeclaration* aDeclaration,
 
           // NavQuirks uses sans-serif instead of whatever the native font is
           if (eCompatibility_NavQuirks == mode) {
-            if (sysID == eSystemAttr_Font_Button ||
-                sysID == eSystemAttr_Font_Caption ||
-                sysID == eSystemAttr_Font_Field) {
+            if (sysID == eSystemAttr_Font_Field) {
+              font->mFont.name.AssignWithConversion("monospace");
+            } else if (sysID == eSystemAttr_Font_Button ||
+                       sysID == eSystemAttr_Font_Caption) {
               font->mFont.name.AssignWithConversion("sans-serif");
             }
           }