bug 1322120 use text node for field and selected colors r=stransky+263117

This adjustment is required for changes to MOZ_GTK_TEXT_VIEW in a6aabcb07a6e.
MOZ_GTK_TEXT_VIEW_TEXT now retrieves the equivalent node from WidgetStyleCache.

MozReview-Commit-ID: 2zfHCKMT0ov

--HG--
extra : rebase_source : 39edee068f44cf9d2f6cccffc89dcd7c2c2616d5

widget/gtk/nsLookAndFeel.cpp

@@ -1284,7 +1284,7 @@ nsLookAndFeel::Init()
     }
 #else
     // Text colors
-    style = ClaimStyleContext(MOZ_GTK_TEXT_VIEW);
+    style = ClaimStyleContext(MOZ_GTK_TEXT_VIEW_TEXT);
     gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL, &color);
     sMozFieldBackground = GDK_RGBA_TO_NS_RGBA(color);
     gtk_style_context_get_color(style, GTK_STATE_FLAG_NORMAL, &color);