Move GLSL-specific routines/classes to separate glsl directory

src/gpu/gl/GrGLCaps.h

Index: src/gpu/gl/GrGLCaps.h
diff --git a/src/gpu/gl/GrGLCaps.h b/src/gpu/gl/GrGLCaps.h
index 3d3319968fb87995899b734609a97047914d2291..fd03da5e466a2ba08ab52f1ec293012b8af21d6b 100644
--- a/src/gpu/gl/GrGLCaps.h
+++ b/src/gpu/gl/GrGLCaps.h
@@ -10,7 +10,7 @@
 #define GrGLCaps_DEFINED
 
 #include "GrCaps.h"
-#include "GrGLSL.h"
+#include "glsl/GrGLSL.h"
 #include "GrGLStencilAttachment.h"
 #include "SkChecksum.h"
 #include "SkTHash.h"
@@ -328,6 +328,10 @@ private:
 
     bool doReadPixelsSupported(const GrGLInterface* intf, GrGLenum format, GrGLenum type) const;
 
+    void initShaderPrecisionTable(const GrGLContextInfo& ctxInfo,
+                                  const GrGLInterface* intf,
+                                  GrGLSLCaps* glslCaps);
+
     // tracks configs that have been verified to pass the FBO completeness when
     // used as a color attachment
     VerifiedColorConfigs fVerifiedColorConfigs;
@@ -387,88 +391,4 @@ private:
     typedef GrCaps INHERITED;
 };
 
-class GrGLSLCaps : public GrShaderCaps {
-public:
-    SK_DECLARE_INST_COUNT(GrGLSLCaps)
-
-    /**
-    * Indicates how GLSL must interact with advanced blend equations. The KHR extension requires
-    * special layout qualifiers in the fragment shader.
-    */
-    enum AdvBlendEqInteraction {
-        kNotSupported_AdvBlendEqInteraction,     //<! No _blend_equation_advanced extension
-        kAutomatic_AdvBlendEqInteraction,        //<! No interaction required
-        kGeneralEnable_AdvBlendEqInteraction,    //<! layout(blend_support_all_equations) out
-        kSpecificEnables_AdvBlendEqInteraction,  //<! Specific layout qualifiers per equation
-
-        kLast_AdvBlendEqInteraction = kSpecificEnables_AdvBlendEqInteraction
-    };
-
-    /**
-     * Initializes the GrGLSLCaps to the set of features supported in the current
-     * OpenGL context accessible via ctxInfo.
-     */
-    GrGLSLCaps(const GrContextOptions&, const GrGLContextInfo&, const GrGLInterface*,
-               const GrGLCaps&);
-
-    /**
-     * Some helper functions for encapsulating various extensions to read FB Buffer on openglES
-     *
-     * TODO(joshualitt) On desktop opengl 4.2+ we can achieve something similar to this effect
-     */
-    bool fbFetchSupport() const { return fFBFetchSupport; }
-
-    bool fbFetchNeedsCustomOutput() const { return fFBFetchNeedsCustomOutput; }
-
-    bool bindlessTextureSupport() const { return fBindlessTextureSupport; }
-
-    const char* fbFetchColorName() const { return fFBFetchColorName; }
-
-    const char* fbFetchExtensionString() const { return fFBFetchExtensionString; }
-
-    bool dropsTileOnZeroDivide() const { return fDropsTileOnZeroDivide; }
-
-    AdvBlendEqInteraction advBlendEqInteraction() const { return fAdvBlendEqInteraction; }
-
-    bool mustEnableAdvBlendEqs() const {
-        return fAdvBlendEqInteraction >= kGeneralEnable_AdvBlendEqInteraction;
-    }
-
-    bool mustEnableSpecificAdvBlendEqs() const {
-        return fAdvBlendEqInteraction == kSpecificEnables_AdvBlendEqInteraction;
-    }
-    
-    bool mustDeclareFragmentShaderOutput() const {
-        return fGLSLGeneration > k110_GrGLSLGeneration;
-    }
-
-    GrGLSLGeneration generation() const { return fGLSLGeneration; }
-
-    /**
-    * Returns a string containing the caps info.
-    */
-    SkString dump() const override;
-
-private:
-    // Must be called after fGeometryShaderSupport is initialized.
-    void initShaderPrecisionTable(const GrGLContextInfo&, const GrGLInterface*);
-
-    GrGLSLGeneration fGLSLGeneration;
-    
-    bool fDropsTileOnZeroDivide : 1;
-    bool fFBFetchSupport : 1;
-    bool fFBFetchNeedsCustomOutput : 1;
-    bool fBindlessTextureSupport : 1;
-
-    const char* fFBFetchColorName;
-    const char* fFBFetchExtensionString;
-
-    AdvBlendEqInteraction fAdvBlendEqInteraction;
-
-    friend class GrGLCaps;  // For initialization.
-
-    typedef GrShaderCaps INHERITED;
-};
-
-
 #endif