Reverting r2969, since it broke the GLPrograms RunTests step.

Unreviewed; build fix.



git-svn-id: http://skia.googlecode.com/svn/trunk@2972 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrGLProgram.cpp b/src/gpu/GrGLProgram.cpp
index 4d733a9..ce87b85 100644
--- a/src/gpu/GrGLProgram.cpp
+++ b/src/gpu/GrGLProgram.cpp
@@ -373,8 +373,7 @@
  */
 static void addColorMatrix(GrStringBuilder* fsCode, const char * outputVar,
                            const char* inColor) {
-    fsCode->appendf("\t%s = %s * vec4(%s.rgb / %s.a, %s.a) + %s;\n", outputVar, COL_MATRIX_UNI_NAME, inColor, inColor, inColor, COL_MATRIX_VEC_UNI_NAME);
-    fsCode->appendf("\t%s.rgb *= %s.a;\n", outputVar, outputVar);
+    fsCode->appendf("%s = %s * %s + %s;\n", outputVar, COL_MATRIX_UNI_NAME, inColor, COL_MATRIX_VEC_UNI_NAME);
 }
 
 namespace {