ui/gl: Move GLImage into gl namespace.

ui/gl/gl_image_ref_counted_memory_unittest.cc

Index: ui/gl/gl_image_ref_counted_memory_unittest.cc
diff --git a/ui/gl/gl_image_ref_counted_memory_unittest.cc b/ui/gl/gl_image_ref_counted_memory_unittest.cc
index be25e63754bd16923ee6a6b049ffab3fbd59b1b3..b7e1a85be47d1b9cf2e7a384e49e6187e7230729 100644
--- a/ui/gl/gl_image_ref_counted_memory_unittest.cc
+++ b/ui/gl/gl_image_ref_counted_memory_unittest.cc
@@ -15,8 +15,9 @@ namespace {
 template <BufferFormat format>
 class GLImageRefCountedMemoryTestDelegate {
  public:
-  scoped_refptr<GLImage> CreateSolidColorImage(const Size& size,
-                                               const uint8_t color[4]) const {
+  scoped_refptr<gl::GLImage> CreateSolidColorImage(
+      const Size& size,
+      const uint8_t color[4]) const {
     DCHECK_EQ(NumberOfPlanesForBufferFormat(format), 1u);
     std::vector<uint8_t> data(BufferSizeForBufferFormat(size, format));
     scoped_refptr<base::RefCountedBytes> bytes(new base::RefCountedBytes(data));