diff -up firefox-45.0.2/widget/gtk/gtk3drawing.c.1263145 firefox-45.0.2/widget/gtk/gtk3drawing.c
--- firefox-45.0.2/widget/gtk/gtk3drawing.c.1263145	2016-04-21 14:30:46.555526845 +0200
+++ firefox-45.0.2/widget/gtk/gtk3drawing.c	2016-04-21 14:32:20.442882060 +0200
@@ -1693,6 +1693,60 @@ moz_gtk_entry_paint(cairo_t *cr, GdkRect
     return MOZ_GTK_SUCCESS;
 }
 
+static gint
+moz_gtk_text_view_paint(cairo_t *cr, GdkRectangle* rect,
+                        GtkWidgetState* state,
+                        GtkTextDirection direction)
+{
+    GtkStyleContext* style;
+    GtkStyleContext* style_frame;
+
+    ensure_text_view_widget();
+    ensure_scrolled_window_widget();
+
+    gtk_widget_set_direction(gTextViewWidget, direction);
+    gtk_widget_set_direction(gScrolledWindowWidget, direction);
+
+    style = gtk_widget_get_style_context(gTextViewWidget);
+    gtk_style_context_save(style);
+    gtk_style_context_add_class(style, GTK_STYLE_CLASS_VIEW);
+
+    style_frame = gtk_widget_get_style_context(gScrolledWindowWidget);
+    gtk_style_context_save(style_frame);
+    gtk_style_context_add_class(style_frame, GTK_STYLE_CLASS_FRAME);
+
+    if (state->focused && !state->disabled) {
+        gtk_style_context_set_state(style, GTK_STATE_FLAG_FOCUSED);
+    }
+
+    if (state->disabled) {
+        gtk_style_context_set_state(style, GTK_STATE_FLAG_INSENSITIVE);
+        gtk_style_context_set_state(style_frame, GTK_STATE_FLAG_INSENSITIVE);
+    }
+    gtk_render_frame(style_frame, cr, rect->x, rect->y, rect->width, rect->height);
+
+    /* only handle disabled and normal states, otherwise the whole background
+     * area will be painted differently with other states */
+    GtkStateFlags state_flags = state->disabled ? GTK_STATE_FLAG_INSENSITIVE :
+                                                  GTK_STATE_FLAG_NORMAL;
+    GtkBorder border, padding;
+    gtk_style_context_get_border(style, state_flags, &border);
+    gtk_style_context_get_padding(style, state_flags, &padding);
+
+    gint xthickness = border.left + padding.left;
+    gint ythickness = border.top + padding.top;
+
+    gtk_render_background(style_frame, cr,
+                          rect->x + xthickness, rect->y + ythickness,
+                          rect->width - 2 * xthickness,
+                          rect->height - 2 * ythickness);
+
+    gtk_style_context_restore(style);
+    gtk_style_context_restore(style_frame);
+
+    return MOZ_GTK_SUCCESS;
+}
+
 static gint 
 moz_gtk_treeview_paint(cairo_t *cr, GdkRectangle* rect,
                        GtkWidgetState* state,
@@ -2915,6 +2969,7 @@ moz_gtk_get_widget_border(GtkThemeWidget
 
             return MOZ_GTK_SUCCESS;
         }
+    case MOZ_GTK_TEXT_VIEW:
     case MOZ_GTK_TREEVIEW:
         {
             ensure_scrolled_window_widget();
@@ -3498,6 +3553,9 @@ moz_gtk_widget_paint(GtkThemeWidgetType
         return moz_gtk_entry_paint(cr, rect, state,
                                    &gComboBoxEntryTextarea, direction);
         break;
+    case MOZ_GTK_TEXT_VIEW:
+        return moz_gtk_text_view_paint(cr, rect, state, direction);
+        break;
     case MOZ_GTK_CHECKBUTTON_CONTAINER:
     case MOZ_GTK_RADIOBUTTON_CONTAINER:
         return moz_gtk_container_paint(cr, rect, state,
diff -up firefox-45.0.2/widget/gtk/gtkdrawing.h.1263145 firefox-45.0.2/widget/gtk/gtkdrawing.h
--- firefox-45.0.2/widget/gtk/gtkdrawing.h.1263145	2016-04-21 14:30:46.555526845 +0200
+++ firefox-45.0.2/widget/gtk/gtkdrawing.h	2016-04-21 14:30:46.560526864 +0200
@@ -128,6 +128,8 @@ typedef enum {
   MOZ_GTK_GRIPPER,
   /* Paints a GtkEntry. */
   MOZ_GTK_ENTRY,
+  /* Paints a GtkTextView. */
+  MOZ_GTK_TEXT_VIEW,
   /* Paints a GtkOptionMenu. */
   MOZ_GTK_DROPDOWN,
   /* Paints a dropdown arrow (a GtkButton containing a down GtkArrow). */
diff -up firefox-45.0.2/widget/gtk/nsNativeThemeGTK.cpp.1263145 firefox-45.0.2/widget/gtk/nsNativeThemeGTK.cpp
--- firefox-45.0.2/widget/gtk/nsNativeThemeGTK.cpp.1263145	2016-04-21 14:30:46.556526849 +0200
+++ firefox-45.0.2/widget/gtk/nsNativeThemeGTK.cpp	2016-04-21 14:30:46.560526864 +0200
@@ -503,8 +503,14 @@ nsNativeThemeGTK::GetGtkWidgetAndState(u
     break;
   case NS_THEME_NUMBER_INPUT:
   case NS_THEME_TEXTFIELD:
+    aGtkWidgetType = MOZ_GTK_ENTRY;
+    break;
   case NS_THEME_TEXTFIELD_MULTILINE:
+#if (MOZ_WIDGET_GTK == 3)
+    aGtkWidgetType = MOZ_GTK_TEXT_VIEW;
+#else
     aGtkWidgetType = MOZ_GTK_ENTRY;
+#endif
     break;
   case NS_THEME_LISTBOX:
   case NS_THEME_TREEVIEW: