Revert of Add infastructure for gl_SampleMask

src/gpu/gl/GrGLGLSL.cpp

Index: src/gpu/gl/GrGLGLSL.cpp
diff --git a/src/gpu/gl/GrGLGLSL.cpp b/src/gpu/gl/GrGLGLSL.cpp
index 4aaa6f87d6d9d7dd8a1bc0471c38b5f1ec70e818..98a2386161f8c80827a070adc61a60eac48edc1b 100755
--- a/src/gpu/gl/GrGLGLSL.cpp
+++ b/src/gpu/gl/GrGLGLSL.cpp
@@ -19,9 +19,7 @@
     switch (gl->fStandard) {
         case kGL_GrGLStandard:
             SkASSERT(ver >= GR_GLSL_VER(1,10));
-            if (ver >= GR_GLSL_VER(4,00)) {
-                *generation = k400_GrGLSLGeneration;
-            } else if (ver >= GR_GLSL_VER(3,30)) {
+            if (ver >= GR_GLSL_VER(3,30)) {
                 *generation = k330_GrGLSLGeneration;
             } else if (ver >= GR_GLSL_VER(1,50)) {
                 *generation = k150_GrGLSLGeneration;
@@ -35,11 +33,10 @@
             return true;
         case kGLES_GrGLStandard:
             SkASSERT(ver >= GR_GL_VER(1,00));
-            if (ver >= GR_GLSL_VER(3,2)) {
-                *generation = k320es_GrGLSLGeneration;
-            } else if (ver >= GR_GLSL_VER(3,1)) {
+            if (ver >= GR_GLSL_VER(3,1)) {
                 *generation = k310es_GrGLSLGeneration;
-            } else if (ver >= GR_GLSL_VER(3,0)) {
+            }
+            else if (ver >= GR_GLSL_VER(3,0)) {
                 *generation = k330_GrGLSLGeneration;
             } else {
                 *generation = k110_GrGLSLGeneration;