Revert of Add correct support for videos with YUVJ420P color format, in the software conversion path.

media/base/simd/linear_scale_yuv_to_rgb_mmx.inc

Index: media/base/simd/linear_scale_yuv_to_rgb_mmx.inc
diff --git a/media/base/simd/linear_scale_yuv_to_rgb_mmx.inc b/media/base/simd/linear_scale_yuv_to_rgb_mmx.inc
index 48f62acf25ad57893e598a0c1cb10f632b462413..dce591d78044e26bd5c6122f65c13e30493d4af1 100644
--- a/media/base/simd/linear_scale_yuv_to_rgb_mmx.inc
+++ b/media/base/simd/linear_scale_yuv_to_rgb_mmx.inc
@@ -10,6 +10,8 @@
 mangle(SYMBOL):
   %assign   stack_offset 0
 
+  extern    mangle(kCoefficientsRgbY)
+
 ; Parameters are in the following order:
 ; 1. Y plane
 ; 2. U plane
@@ -17,9 +19,8 @@
 ; 4. ARGB frame
 ; 5. Width
 ; 6. Source dx
-; 7. Conversion lookup table
 
-PROLOGUE  7, 7, 3, Y, R0, R1, ARGB, R2, TEMP, R3
+PROLOGUE  6, 7, 3, Y, R0, R1, ARGB, R2, R3, TEMP
 
 %if gprsize == 8
 %define     WORD_SIZE   QWORD
@@ -33,7 +34,7 @@
 %define     COMPLd              R2d     ; Component A value
 %define     U_ARG_REGq          R0q     ; U plane address argument
 %define     V_ARG_REGq          R1q     ; V plane address argument
-%define     SOURCE_DX_ARG_REGq  TEMPq   ; Source dx argument
+%define     SOURCE_DX_ARG_REGq  R3q     ; Source dx argument
 %define     WIDTH_ARG_REGq      R2q     ; Width argument
 
 %define     COMPRq              R0q     ; Component B value
@@ -54,6 +55,11 @@
   PUSH      SOURCE_DX_ARG_REGq
   imul      WIDTH_ARG_REGq, SOURCE_DX_ARG_REGq  ; source_width = width * source_dx
   PUSH      WIDTH_ARG_REGq
+
+; Load the address of kCoefficientsRgbY into TABLE
+  mov       TEMPq, SOURCE_DX_ARG_REGq    ; Need to save source_dx first
+  LOAD_SYM  TABLE, mangle(kCoefficientsRgbY)
+%define     SOURCE_DX_ARG_REGq  TEMPq   ; Overwrite SOURCE_DX_ARG_REGq to TEMPq
 
 %macro EPILOGUE 0
   ADD       rsp, 4 * gprsize