Move GLSL-specific routines/classes to separate glsl directory

src/gpu/gl/GrGLGLSL.h

Index: src/gpu/gl/GrGLGLSL.h
diff --git a/src/gpu/gl/GrGLGLSL.h b/src/gpu/gl/GrGLGLSL.h
new file mode 100755
index 0000000000000000000000000000000000000000..724765f1a8a5dfe917817b0111f8a49e0387aa5c
--- /dev/null
+++ b/src/gpu/gl/GrGLGLSL.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrGLInitGLSL_DEFINED
+#define GrGLInitGLSL_DEFINED
+
+#include "gl/GrGLInterface.h"
+#include "glsl/GrGLSL.h"
+#include "GrColor.h"
+#include "GrTypesPriv.h"
+#include "SkString.h"
+
+class GrGLContextInfo;
+
+/**
+ * Gets the most recent GLSL Generation compatible with the OpenGL context.
+ */
+bool GrGLGetGLSLGeneration(const GrGLInterface* gl, GrGLSLGeneration* generation);
+
+/**
+ * Returns a string to include at the beginning of a shader to declare the GLSL
+ * version.
+ */
+const char* GrGLGetGLSLVersionDecl(const GrGLContextInfo&);
+
+/**
+ * Adds a line of GLSL code to declare the default precision for float types.
+ */
+void GrGLAppendGLSLDefaultFloatPrecisionDeclaration(GrSLPrecision, GrGLStandard, SkString* out);
+
+
+#endif