Add support for 2x2 matrices

src/gpu/gl/GrGLProgramDataManager.h

Index: src/gpu/gl/GrGLProgramDataManager.h
diff --git a/src/gpu/gl/GrGLProgramDataManager.h b/src/gpu/gl/GrGLProgramDataManager.h
index 2c92cece1b774d7aea07bf352fde8bbdb8f73b95..c2cb8fc69894f8ff8d8d8934a791242fd9121832 100644
--- a/src/gpu/gl/GrGLProgramDataManager.h
+++ b/src/gpu/gl/GrGLProgramDataManager.h
@@ -61,8 +61,10 @@ public:
     void set4fv(UniformHandle, int arrayCount, const float v[]) const override;
     // matrices are column-major, the first three upload a single matrix, the latter three upload
     // arrayCount matrices into a uniform array.
+    void setMatrix2f(UniformHandle, const float matrix[]) const override;
     void setMatrix3f(UniformHandle, const float matrix[]) const override;
     void setMatrix4f(UniformHandle, const float matrix[]) const override;
+    void setMatrix2fv(UniformHandle, int arrayCount, const float matrices[]) const override;
     void setMatrix3fv(UniformHandle, int arrayCount, const float matrices[]) const override;
     void setMatrix4fv(UniformHandle, int arrayCount, const float matrices[]) const override;
 
@@ -97,6 +99,9 @@ private:
 
     SkDEBUGCODE(void printUnused(const Uniform&) const;)
 
+    template<int N> inline void setMatrices(UniformHandle, int arrayCount,
+                                            const float matrices[]) const;
+
     SkTArray<Uniform, true> fUniforms;
     SkTArray<PathProcVarying, true> fPathProcVaryings;
     GrGLGpu* fGpu;