Create GLSLUniformHandler class for gpu backend

src/gpu/glsl/GrGLSLPrimitiveProcessor.h

Index: src/gpu/glsl/GrGLSLPrimitiveProcessor.h
diff --git a/src/gpu/glsl/GrGLSLPrimitiveProcessor.h b/src/gpu/glsl/GrGLSLPrimitiveProcessor.h
index d164bbe53e03c0fea0fe4439599e27c37c0beacc..9fa5150e8288854bb5b6a54ebabd044e88c24d11 100644
--- a/src/gpu/glsl/GrGLSLPrimitiveProcessor.h
+++ b/src/gpu/glsl/GrGLSLPrimitiveProcessor.h
@@ -18,6 +18,7 @@ class GrPrimitiveProcessor;
 class GrGLSLCaps;
 class GrGLSLFragmentBuilder;
 class GrGLSLGPBuilder;
+class GrGLSLUniformHandler;
 class GrGLSLVaryingHandler;
 class GrGLSLVertexBuilder;
 
@@ -33,10 +34,10 @@ public:
     typedef SkSTArray<8, GrGLSLTransformedCoordsArray> TransformsOut;
 
     struct EmitArgs {
-        EmitArgs(GrGLSLGPBuilder* pb,
-                 GrGLSLVertexBuilder* vertBuilder,
+        EmitArgs(GrGLSLVertexBuilder* vertBuilder,
                  GrGLSLFragmentBuilder* fragBuilder,
                  GrGLSLVaryingHandler* varyingHandler,
+                 GrGLSLUniformHandler* uniformHandler,
                  const GrGLSLCaps* caps,
                  const GrPrimitiveProcessor& gp,
                  const char* outputColor,
@@ -44,10 +45,10 @@ public:
                  const TextureSamplerArray& samplers,
                  const TransformsIn& transformsIn,
                  TransformsOut* transformsOut)
-            : fPB(pb)
-            , fVertBuilder(vertBuilder)
+            : fVertBuilder(vertBuilder)
             , fFragBuilder(fragBuilder)
             , fVaryingHandler(varyingHandler)
+            , fUniformHandler(uniformHandler)
             , fGLSLCaps(caps)
             , fGP(gp)
             , fOutputColor(outputColor)
@@ -55,10 +56,10 @@ public:
             , fSamplers(samplers)
             , fTransformsIn(transformsIn)
             , fTransformsOut(transformsOut) {}
-        GrGLSLGPBuilder* fPB;
         GrGLSLVertexBuilder* fVertBuilder;
         GrGLSLFragmentBuilder* fFragBuilder;
         GrGLSLVaryingHandler* fVaryingHandler;
+        GrGLSLUniformHandler* fUniformHandler;
         const GrGLSLCaps* fGLSLCaps;
         const GrPrimitiveProcessor& fGP;
         const char* fOutputColor;
@@ -91,8 +92,8 @@ public:
                                   const SkTArray<const GrCoordTransform*, true>& transforms) = 0;
 
 protected:
-    void setupUniformColor(GrGLSLGPBuilder* pb,
-                           GrGLSLFragmentBuilder* fragBuilder,
+    void setupUniformColor(GrGLSLFragmentBuilder* fragBuilder,
+                           GrGLSLUniformHandler* uniformHandler,
                            const char* outputName,
                            UniformHandle* colorUniform);