ui/gl: Move GLImage into gl namespace.

cc/test/test_image_factory.cc

Index: cc/test/test_image_factory.cc
diff --git a/cc/test/test_image_factory.cc b/cc/test/test_image_factory.cc
index 796b6d81e5ad589da8ec8639041b73d492901992..69070e797ace260cf9097300ef62721fdb71f7c3 100644
--- a/cc/test/test_image_factory.cc
+++ b/cc/test/test_image_factory.cc
@@ -14,7 +14,7 @@ TestImageFactory::TestImageFactory() {
 TestImageFactory::~TestImageFactory() {
 }
 
-scoped_refptr<gfx::GLImage> TestImageFactory::CreateImageForGpuMemoryBuffer(
+scoped_refptr<gl::GLImage> TestImageFactory::CreateImageForGpuMemoryBuffer(
     const gfx::GpuMemoryBufferHandle& handle,
     const gfx::Size& size,
     gfx::BufferFormat format,
@@ -22,8 +22,8 @@ scoped_refptr<gfx::GLImage> TestImageFactory::CreateImageForGpuMemoryBuffer(
     int client_id) {
   DCHECK_EQ(handle.type, gfx::SHARED_MEMORY_BUFFER);
 
-  scoped_refptr<gfx::GLImageSharedMemory> image(
-      new gfx::GLImageSharedMemory(size, internalformat));
+  scoped_refptr<gl::GLImageSharedMemory> image(
+      new gl::GLImageSharedMemory(size, internalformat));
   if (!image->Initialize(handle.handle, handle.id, format, handle.offset))
     return nullptr;