D3D11: Fix loading of RGBA8 data to RGB565.

BUG=angleproject:1407
BUG=chromium:616176

Change-Id: I663d265abfabb88a5aca8ca0002d2cbc29f6b069
Reviewed-on: https://chromium-review.googlesource.com/350906
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
diff --git a/src/tests/test_utils/ANGLETest.cpp b/src/tests/test_utils/ANGLETest.cpp
index a9032a1..d30fc70 100644
--- a/src/tests/test_utils/ANGLETest.cpp
+++ b/src/tests/test_utils/ANGLETest.cpp
@@ -15,6 +15,11 @@
 namespace angle
 {
 
+const GLColorRGB GLColorRGB::blue(0u, 0u, 255u);
+const GLColorRGB GLColorRGB::green(0u, 255u, 0u);
+const GLColorRGB GLColorRGB::red(255u, 0u, 0u);
+const GLColorRGB GLColorRGB::yellow(255u, 255u, 0);
+
 const GLColor GLColor::black = GLColor(0u, 0u, 0u, 255u);
 const GLColor GLColor::blue   = GLColor(0u, 0u, 255u, 255u);
 const GLColor GLColor::cyan   = GLColor(0u, 255u, 255u, 255u);
@@ -86,6 +91,14 @@
 TestPlatform g_testPlatformInstance;
 }  // anonymous namespace
 
+GLColorRGB::GLColorRGB() : R(0), G(0), B(0)
+{
+}
+
+GLColorRGB::GLColorRGB(GLubyte r, GLubyte g, GLubyte b) : R(r), G(g), B(b)
+{
+}
+
 GLColor::GLColor() : R(0), G(0), B(0), A(0)
 {
 }