Remove remaining traces of CreateGpuMemoryBufferImageCHROMIUM

gpu/command_buffer/tests/gl_copy_texture_CHROMIUM_unittest.cc

Index: gpu/command_buffer/tests/gl_copy_texture_CHROMIUM_unittest.cc
diff --git a/gpu/command_buffer/tests/gl_copy_texture_CHROMIUM_unittest.cc b/gpu/command_buffer/tests/gl_copy_texture_CHROMIUM_unittest.cc
index cdaaab26351aae5a003701a8ad7cefc91fa12e43..5be1671cb362b5b13c355f4a0166a1104ab58312 100644
--- a/gpu/command_buffer/tests/gl_copy_texture_CHROMIUM_unittest.cc
+++ b/gpu/command_buffer/tests/gl_copy_texture_CHROMIUM_unittest.cc
@@ -300,8 +300,10 @@ class GLCopyTextureCHROMIUMTest
 
   void CreateBackingForTexture(GLenum target, GLsizei width, GLsizei height) {
     if (target == GL_TEXTURE_RECTANGLE_ARB) {
-      GLuint image_id = glCreateGpuMemoryBufferImageCHROMIUM(
-          width, height, GL_RGBA, GL_READ_WRITE_CHROMIUM);
+      std::unique_ptr<gfx::GpuMemoryBuffer> buffer(gl_.CreateGpuMemoryBuffer(
+          gfx::Size(width, height), gfx::BufferFormat::RGBA_8888));
+      GLuint image_id = glCreateImageCHROMIUM(buffer->AsClientBuffer(), width,
+                                              height, GL_RGBA);
       glBindTexImage2DCHROMIUM(target, image_id);
     } else {
       glTexImage2D(target, 0, GL_RGBA, width, height, 0, GL_RGBA,