Fix gcc 4.7 building problems - cont'

media/base/simd/convert_rgb_to_yuv_sse2.cc

Index: media/base/simd/convert_rgb_to_yuv_sse2.cc
diff --git a/media/base/simd/convert_rgb_to_yuv_sse2.cc b/media/base/simd/convert_rgb_to_yuv_sse2.cc
index bb803f6189cc637030baa65135fa4918acb44a35..47ec4c9b01a60f987252a872429b0a697ad83e4e 100644
--- a/media/base/simd/convert_rgb_to_yuv_sse2.cc
+++ b/media/base/simd/convert_rgb_to_yuv_sse2.cc
@@ -18,15 +18,20 @@ namespace media {
 #define FIX_SHIFT 12
 #define FIX(x) ((x) * (1 << FIX_SHIFT))
 
+// Define a convenient macro to do static cast.
+#define INT16_FIX(x) static_cast<int16>(FIX(x))
+
 SIMD_ALIGNED(const int16 ConvertRGBAToYUV_kTable[8 * 3]) = {
-  FIX(0.098), FIX(0.504), FIX(0.257), 0,
-  FIX(0.098), FIX(0.504), FIX(0.257), 0,
-  FIX(0.439), -FIX(0.291), -FIX(0.148), 0,
-  FIX(0.439), -FIX(0.291), -FIX(0.148), 0,
- -FIX(0.071), -FIX(0.368), FIX(0.439), 0,
-  -FIX(0.071), -FIX(0.368), FIX(0.439), 0,
+  INT16_FIX(0.098), INT16_FIX(0.504), INT16_FIX(0.257), 0,
+  INT16_FIX(0.098), INT16_FIX(0.504), INT16_FIX(0.257), 0,
+  INT16_FIX(0.439), -INT16_FIX(0.291), -INT16_FIX(0.148), 0,
+  INT16_FIX(0.439), -INT16_FIX(0.291), -INT16_FIX(0.148), 0,
+  -INT16_FIX(0.071), -INT16_FIX(0.368), INT16_FIX(0.439), 0,
+  -INT16_FIX(0.071), -INT16_FIX(0.368), INT16_FIX(0.439), 0,
 };
 
+#undef INT16_FIX
+
 // This is the final offset for the conversion from signed yuv values to
 // unsigned values. It is arranged so that offset of 16 is applied to Y
 // components and 128 is added to UV components for 2 pixels.