Revert "Delete CC."

cc/output/shader_unittest.cc

+// Copyright 2013 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 "cc/output/shader.h"
+
+#include "cc/test/test_gles2_interface.h"
+#include "cc/test/test_web_graphics_context_3d.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/geometry/point.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace cc {
+
+TEST(ShaderTest, HighpThresholds) {
+  // The test context always uses a mediump precision of 10 bits which
+  // corresponds to a native highp threshold of 2^10 = 1024
+  scoped_ptr<TestWebGraphicsContext3D> stub_context =
+    TestWebGraphicsContext3D::Create();
+  TestGLES2Interface stub_gl(stub_context.get());
+
+  int threshold_cache = 0;
+  int threshold_min;
+  gfx::Point closePoint(512, 512);
+  gfx::Size smallSize(512, 512);
+  gfx::Point farPoint(2560, 2560);
+  gfx::Size bigSize(2560, 2560);
+
+  threshold_min = 0;
+  EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
+            TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
+                                      closePoint));
+  EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
+            TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
+                                      smallSize));
+  EXPECT_EQ(TEX_COORD_PRECISION_HIGH,
+            TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
+                                      farPoint));
+  EXPECT_EQ(TEX_COORD_PRECISION_HIGH,
+            TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
+                                      bigSize));
+
+  threshold_min = 3000;
+  EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
+            TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
+                                      closePoint));
+  EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
+            TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
+                                      smallSize));
+  EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
+            TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
+                                      farPoint));
+  EXPECT_EQ(TEX_COORD_PRECISION_MEDIUM,
+            TexCoordPrecisionRequired(&stub_gl, &threshold_cache, threshold_min,
+                                      bigSize));
+}
+
+}  // namespace cc