Move shader compiling to ProgramBuilder and various ShaderBuilder cleanups.

src/gpu/glsl/GrGLSLCaps.cpp

Index: src/gpu/glsl/GrGLSLCaps.cpp
diff --git a/src/gpu/glsl/GrGLSLCaps.cpp b/src/gpu/glsl/GrGLSLCaps.cpp
index fef5ab377cc9fa667b637c4066db429a3963e8d0..f6cbfe60fd0f205af9d5afbe74027000a2dcf61b 100755
--- a/src/gpu/glsl/GrGLSLCaps.cpp
+++ b/src/gpu/glsl/GrGLSLCaps.cpp
@@ -20,7 +20,10 @@ GrGLSLCaps::GrGLSLCaps(const GrContextOptions& options) {
     fUsesPrecisionModifiers = false;
     fCanUseAnyFunctionInShader = true;
     fForceHighPrecisionNDSTransform = false;
+    fTextureSwizzleSupport = false;
+    fTextureRedSupport = false;
     fVersionDeclString = nullptr;
+    fShaderDerivativeExtensionString = nullptr;
     fFBFetchColorName = nullptr;
     fFBFetchExtensionString = nullptr;
     fAdvBlendEqInteraction = kNotSupported_AdvBlendEqInteraction;
@@ -50,6 +53,8 @@ SkString GrGLSLCaps::dump() const {
     r.appendf("Can Use any() function: %s\n", (fCanUseAnyFunctionInShader ? "YES" : "NO"));
     r.appendf("Force high precision on NDS transform: %s\n", (fForceHighPrecisionNDSTransform ?
                                                               "YES" : "NO"));
+    r.appendf("Support texture swizzle: %s\n", (fTextureSwizzleSupport ? "YES": "NO"));
+    r.appendf("Red texture support: %s\n", (fTextureRedSupport ? "YES": "NO"));
     r.appendf("Advanced blend equation interaction: %s\n",
               kAdvBlendEqInteractionStr[fAdvBlendEqInteraction]);
     return r;