added initial GLSL support to skslc

src/sksl/SkSLCompiler.h

Index: src/sksl/SkSLCompiler.h
diff --git a/src/sksl/SkSLCompiler.h b/src/sksl/SkSLCompiler.h
index e63d5f4ed843bec6690e7c92974ce3f271398605..c64a24c43302da8035ce7c4098c505918752d6b5 100644
--- a/src/sksl/SkSLCompiler.h
+++ b/src/sksl/SkSLCompiler.h
@@ -13,6 +13,7 @@
 #include "ir/SkSLSymbolTable.h"
 #include "SkSLContext.h"
 #include "SkSLErrorReporter.h"
+#include "SkSLGLSLCodeGenerator.h"
 
 namespace SkSL {
 
@@ -32,9 +33,13 @@ public:
 
     std::unique_ptr<Program> convertProgram(Program::Kind kind, std::string text);
 
-	bool toSPIRV(Program::Kind kind, std::string text, std::ostream& out);
+	bool toSPIRV(Program::Kind kind, const std::string& text, std::ostream& out);
 	
-	bool toSPIRV(Program::Kind kind, std::string text, std::string* out);
+	bool toSPIRV(Program::Kind kind, const std::string& text, std::string* out);
+
+    bool toGLSL(Program::Kind kind, const std::string& text, GLCaps caps, std::ostream& out);

[dogben, 2016/07/31 23:20:19]

nit: indentation doesn't seem to match above.

[ethannicholas, 2016/08/02 16:13:17]

Evidently one of the editors I use was not properly configured for spaces vs.
tabs, and some tabs snuck in. I have replaced all of them with spaces.

+    
+    bool toGLSL(Program::Kind kind, const std::string& text, GLCaps caps, std::string* out);
 
     void error(Position position, std::string msg) override;