Add display_compositor unittests into components_unittests

components/display_compositor/gl_helper_unittest.cc

 // Copyright 2016 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 <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
 #include <cmath>
 #include <string>
@@ skipping 1245 matching lines @@
                    "100x4 -> 64x1 bilinear2x2\n"
                    "64x1 -> 8x1 bilinear4 X\n"
                    "8x1 -> 1x1 bilinear4 X\n");
   }
 
   std::unique_ptr<gpu::GLInProcessContext> context_;
   gpu::gles2::GLES2Interface* gl_;
   std::unique_ptr<display_compositor::GLHelper> helper_;
   std::unique_ptr<display_compositor::GLHelperScaling> helper_scaling_;
   std::deque<GLHelperScaling::ScaleOp> x_ops_, y_ops_;
+  base::MessageLoop message_loop_;

[Fady Samuel, 2016/05/03 18:03:44]

Do we use this?

[Peng, 2016/05/03 18:10:36]

Yes. Without it, those tests crash.

 };
 
 class GLHelperPixelTest : public GLHelperTest {
  private:
   gfx::DisableNullDrawGLBindings enable_pixel_output_;
 };
 
 TEST_F(GLHelperTest, RGBASyncReadbackTest) {
   const int kTestSize = 64;
   bool result = TestTextureFormatReadback(gfx::Size(kTestSize, kTestSize),
@@ skipping 152 matching lines @@
     }
   }
 }
 
 TEST_F(GLHelperTest, CheckOptimizations) {
   // Test in baseclass since it is friends with GLHelperScaling
   CheckOptimizationsTest();
 }
 
 }  // namespace display_compositor