Revert of Cleanup: Remove unneeded SSE2 checks and unused code.

media/base/yuv_convert_perftest.cc

Index: media/base/yuv_convert_perftest.cc
diff --git a/media/base/yuv_convert_perftest.cc b/media/base/yuv_convert_perftest.cc
index 1600bcfd8ea3ebbddcb8d3265895d390821c6dab..0f30bebec8bb57a6f4fab330d22c290c1f270ab1 100644
--- a/media/base/yuv_convert_perftest.cc
+++ b/media/base/yuv_convert_perftest.cc
@@ -64,6 +64,31 @@
   DISALLOW_COPY_AND_ASSIGN(YUVConvertPerfTest);
 };
 
+TEST_F(YUVConvertPerfTest, ConvertYUVToRGB32Row_MMX) {
+  ASSERT_TRUE(base::CPU().has_mmx());
+
+  base::TimeTicks start = base::TimeTicks::HighResNow();
+  for (int i = 0; i < kPerfTestIterations; ++i) {
+    for (int row = 0; row < kSourceHeight; ++row) {
+      int chroma_row = row / 2;
+      ConvertYUVToRGB32Row_MMX(
+          yuv_bytes_.get() + row * kSourceWidth,
+          yuv_bytes_.get() + kSourceUOffset + (chroma_row * kSourceWidth / 2),
+          yuv_bytes_.get() + kSourceVOffset + (chroma_row * kSourceWidth / 2),
+          rgb_bytes_converted_.get(),
+          kWidth,
+          GetLookupTable(YV12));
+    }
+  }
+  double total_time_seconds =
+      (base::TimeTicks::HighResNow() - start).InSecondsF();
+  perf_test::PrintResult(
+      "yuv_convert_perftest", "", "ConvertYUVToRGB32Row_MMX",
+      kPerfTestIterations / total_time_seconds, "runs/s", true);
+
+  media::EmptyRegisterState();
+}
+
 TEST_F(YUVConvertPerfTest, ConvertYUVToRGB32Row_SSE) {
   ASSERT_TRUE(base::CPU().has_sse());
 
@@ -88,6 +113,33 @@
   media::EmptyRegisterState();
 }
 
+TEST_F(YUVConvertPerfTest, ScaleYUVToRGB32Row_MMX) {
+  ASSERT_TRUE(base::CPU().has_mmx());
+
+  const int kSourceDx = 80000;  // This value means a scale down.
+
+  base::TimeTicks start = base::TimeTicks::HighResNow();
+  for (int i = 0; i < kPerfTestIterations; ++i) {
+    for (int row = 0; row < kSourceHeight; ++row) {
+      int chroma_row = row / 2;
+      ScaleYUVToRGB32Row_MMX(
+          yuv_bytes_.get() + row * kSourceWidth,
+          yuv_bytes_.get() + kSourceUOffset + (chroma_row * kSourceWidth / 2),
+          yuv_bytes_.get() + kSourceVOffset + (chroma_row * kSourceWidth / 2),
+          rgb_bytes_converted_.get(),
+          kWidth,
+          kSourceDx,
+          GetLookupTable(YV12));
+    }
+  }
+  double total_time_seconds =
+      (base::TimeTicks::HighResNow() - start).InSecondsF();
+  perf_test::PrintResult(
+      "yuv_convert_perftest", "", "ScaleYUVToRGB32Row_MMX",
+      kPerfTestIterations / total_time_seconds, "runs/s", true);
+  media::EmptyRegisterState();
+}
+
 TEST_F(YUVConvertPerfTest, ScaleYUVToRGB32Row_SSE) {
   ASSERT_TRUE(base::CPU().has_sse());
 
@@ -115,6 +167,33 @@
   media::EmptyRegisterState();
 }
 
+TEST_F(YUVConvertPerfTest, LinearScaleYUVToRGB32Row_MMX) {
+  ASSERT_TRUE(base::CPU().has_mmx());
+
+  const int kSourceDx = 80000;  // This value means a scale down.
+
+  base::TimeTicks start = base::TimeTicks::HighResNow();
+  for (int i = 0; i < kPerfTestIterations; ++i) {
+    for (int row = 0; row < kSourceHeight; ++row) {
+      int chroma_row = row / 2;
+      LinearScaleYUVToRGB32Row_MMX(
+          yuv_bytes_.get() + row * kSourceWidth,
+          yuv_bytes_.get() + kSourceUOffset + (chroma_row * kSourceWidth / 2),
+          yuv_bytes_.get() + kSourceVOffset + (chroma_row * kSourceWidth / 2),
+          rgb_bytes_converted_.get(),
+          kWidth,
+          kSourceDx,
+          GetLookupTable(YV12));
+    }
+  }
+  double total_time_seconds =
+      (base::TimeTicks::HighResNow() - start).InSecondsF();
+  perf_test::PrintResult(
+      "yuv_convert_perftest", "", "LinearScaleYUVToRGB32Row_MMX",
+      kPerfTestIterations / total_time_seconds, "runs/s", true);
+  media::EmptyRegisterState();
+}
+
 TEST_F(YUVConvertPerfTest, LinearScaleYUVToRGB32Row_SSE) {
   ASSERT_TRUE(base::CPU().has_sse());