Attempt to fix text not being clipped. This only seems to happen in...

app/gfx/canvas_linux.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "app/gfx/canvas.h"
 
 #include <cairo/cairo.h>
 #include <gtk/gtk.h>
 #include <pango/pango.h>
 #include <pango/pangocairo.h>
@@ skipping 188 matching lines @@
   g_object_unref(layout);
   cairo_destroy(cr);
   cairo_surface_destroy(surface);
 }
 
 void Canvas::DrawStringInt(const std::wstring& text,
                            const gfx::Font& font,
                            const SkColor& color,
                            int x, int y, int w, int h,
                            int flags) {
+  if (w <= 0 || h <= 0)
+    return;
+
   cairo_t* cr = beginPlatformPaint();
   PangoLayout* layout = pango_cairo_create_layout(cr);
 
   SetupPangoLayout(layout, font, w, flags);
 
   pango_layout_set_height(layout, h * PANGO_SCALE);
 
   cairo_save(cr);
   cairo_set_source_rgb(cr,
                        SkColorGetR(color) / 255.0,
@@ skipping 39 matching lines @@
     NOTREACHED();
     return;
   }
 
   cairo_t* cr = beginPlatformPaint();
   gdk_cairo_set_source_pixbuf(cr, pixbuf, x, y);
   cairo_paint(cr);
 }
 
 }  // namespace gfx