Make appending default precision be controled by GLSL

BUG=skia:

Review URL: https://codereview.chromium.org/1403373012
diff --git a/bench/GLInstancedArraysBench.cpp b/bench/GLInstancedArraysBench.cpp
index ea780f4..4ef813c 100644
--- a/bench/GLInstancedArraysBench.cpp
+++ b/bench/GLInstancedArraysBench.cpp
@@ -12,9 +12,9 @@
 #if SK_SUPPORT_GPU
 #include "GLBench.h"
 #include "gl/GrGLContext.h"
-#include "gl/GrGLGLSL.h"
 #include "gl/GrGLInterface.h"
 #include "gl/GrGLUtil.h"
+#include "glsl/GrGLSL.h"
 #include "glsl/GrGLSLCaps.h"
 #include "glsl/GrGLSLShaderVar.h"
 
@@ -107,7 +107,8 @@
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 GrGLuint GLCpuPosInstancedArraysBench::setupShader(const GrGLContext* ctx) {
-    const char* version = ctx->caps()->glslCaps()->versionDeclString();
+    const GrGLSLCaps* glslCaps = ctx->caps()->glslCaps();
+    const char* version = glslCaps->versionDeclString();
 
     // setup vertex shader
     GrGLSLShaderVar aPosition("a_position", kVec2f_GrSLType, GrShaderVar::kAttribute_TypeModifier);
@@ -115,11 +116,11 @@
     GrGLSLShaderVar oColor("o_color", kVec3f_GrSLType, GrShaderVar::kVaryingOut_TypeModifier);
 
     SkString vshaderTxt(version);
-    aPosition.appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+    aPosition.appendDecl(glslCaps, &vshaderTxt);
     vshaderTxt.append(";\n");
-    aColor.appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+    aColor.appendDecl(glslCaps, &vshaderTxt);
     vshaderTxt.append(";\n");
-    oColor.appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+    oColor.appendDecl(glslCaps, &vshaderTxt);
     vshaderTxt.append(";\n");
 
     vshaderTxt.append(
@@ -134,15 +135,14 @@
     // setup fragment shader
     GrGLSLShaderVar oFragColor("o_FragColor", kVec4f_GrSLType, GrShaderVar::kOut_TypeModifier);
     SkString fshaderTxt(version);
-    GrGLAppendGLSLDefaultFloatPrecisionDeclaration(kDefault_GrSLPrecision, gl->fStandard,
-                                                   &fshaderTxt);
+    GrGLSLAppendDefaultFloatPrecisionDeclaration(kDefault_GrSLPrecision, *glslCaps, &fshaderTxt);
     oColor.setTypeModifier(GrShaderVar::kVaryingIn_TypeModifier);
-    oColor.appendDecl(ctx->caps()->glslCaps(), &fshaderTxt);
+    oColor.appendDecl(glslCaps, &fshaderTxt);
     fshaderTxt.append(";\n");
 
     const char* fsOutName;
-    if (ctx->caps()->glslCaps()->mustDeclareFragmentShaderOutput()) {
-        oFragColor.appendDecl(ctx->caps()->glslCaps(), &fshaderTxt);
+    if (glslCaps->mustDeclareFragmentShaderOutput()) {
+        oFragColor.appendDecl(glslCaps, &fshaderTxt);
         fshaderTxt.append(";\n");
         fsOutName = oFragColor.c_str();
     } else {
diff --git a/bench/GLVec4ScalarBench.cpp b/bench/GLVec4ScalarBench.cpp
index 490b55a..e3837a7 100644
--- a/bench/GLVec4ScalarBench.cpp
+++ b/bench/GLVec4ScalarBench.cpp
@@ -12,9 +12,9 @@
 #if SK_SUPPORT_GPU
 #include "GLBench.h"
 #include "gl/GrGLContext.h"
-#include "gl/GrGLGLSL.h"
 #include "gl/GrGLInterface.h"
 #include "gl/GrGLUtil.h"
+#include "glsl/GrGLSL.h"
 #include "glsl/GrGLSLCaps.h"
 #include "glsl/GrGLSLShaderVar.h"
 
@@ -93,7 +93,8 @@
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 GrGLuint GLVec4ScalarBench::setupShader(const GrGLContext* ctx) {
-    const char* version = ctx->caps()->glslCaps()->versionDeclString();
+    const GrGLSLCaps* glslCaps = ctx->caps()->glslCaps();
+    const char* version = glslCaps->versionDeclString();
 
     // this shader draws fNumStages overlapping circles of increasing opacity (coverage) and
     // decreasing size, with the center of each subsequent circle closer to the bottom-right
@@ -106,13 +107,13 @@
     GrGLSLShaderVar oColor("o_color", kVec3f_GrSLType, GrShaderVar::kVaryingOut_TypeModifier);
 
     SkString vshaderTxt(version);
-    aPosition.appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+    aPosition.appendDecl(glslCaps, &vshaderTxt);
     vshaderTxt.append(";\n");
-    aColor.appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+    aColor.appendDecl(glslCaps, &vshaderTxt);
     vshaderTxt.append(";\n");
-    oPosition.appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+    oPosition.appendDecl(glslCaps, &vshaderTxt);
     vshaderTxt.append(";\n");
-    oColor.appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+    oColor.appendDecl(glslCaps, &vshaderTxt);
     vshaderTxt.append(";\n");
 
     vshaderTxt.append(
@@ -132,18 +133,17 @@
     // next stage.
     GrGLSLShaderVar oFragColor("o_FragColor", kVec4f_GrSLType, GrShaderVar::kOut_TypeModifier);
     SkString fshaderTxt(version);
-    GrGLAppendGLSLDefaultFloatPrecisionDeclaration(kDefault_GrSLPrecision, gl->fStandard,
-                                                   &fshaderTxt);
+    GrGLSLAppendDefaultFloatPrecisionDeclaration(kDefault_GrSLPrecision, *glslCaps, &fshaderTxt);
     oPosition.setTypeModifier(GrShaderVar::kVaryingIn_TypeModifier);
-    oPosition.appendDecl(ctx->caps()->glslCaps(), &fshaderTxt);
+    oPosition.appendDecl(glslCaps, &fshaderTxt);
     fshaderTxt.append(";\n");
     oColor.setTypeModifier(GrShaderVar::kVaryingIn_TypeModifier);
-    oColor.appendDecl(ctx->caps()->glslCaps(), &fshaderTxt);
+    oColor.appendDecl(glslCaps, &fshaderTxt);
     fshaderTxt.append(";\n");
 
     const char* fsOutName;
-    if (ctx->caps()->glslCaps()->mustDeclareFragmentShaderOutput()) {
-        oFragColor.appendDecl(ctx->caps()->glslCaps(), &fshaderTxt);
+    if (glslCaps->mustDeclareFragmentShaderOutput()) {
+        oFragColor.appendDecl(glslCaps, &fshaderTxt);
         fshaderTxt.append(";\n");
         fsOutName = oFragColor.c_str();
     } else {
diff --git a/bench/GLVertexAttributesBench.cpp b/bench/GLVertexAttributesBench.cpp
index 1051c31..040ca18 100644
--- a/bench/GLVertexAttributesBench.cpp
+++ b/bench/GLVertexAttributesBench.cpp
@@ -12,9 +12,9 @@
 #if SK_SUPPORT_GPU
 #include "GLBench.h"
 #include "gl/GrGLContext.h"
-#include "gl/GrGLGLSL.h"
 #include "gl/GrGLInterface.h"
 #include "gl/GrGLUtil.h"
+#include "glsl/GrGLSL.h"
 #include "glsl/GrGLSLCaps.h"
 #include "glsl/GrGLSLShaderVar.h"
 #include <stdio.h>
@@ -65,7 +65,8 @@
 
 GrGLuint GLVertexAttributesBench::setupShader(const GrGLContext* ctx, uint32_t attribs,
                                               uint32_t maxAttribs) {
-    const char* version = ctx->caps()->glslCaps()->versionDeclString();
+    const GrGLSLCaps* glslCaps = ctx->caps()->glslCaps();
+    const char* version = glslCaps->versionDeclString();
 
     // setup vertex shader
     GrGLSLShaderVar aPosition("a_position", kVec4f_GrSLType, GrShaderVar::kAttribute_TypeModifier);
@@ -73,7 +74,7 @@
     SkTArray<GrGLSLShaderVar> oVars;
 
     SkString vshaderTxt(version);
-    aPosition.appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+    aPosition.appendDecl(glslCaps, &vshaderTxt);
     vshaderTxt.append(";\n");
 
     for (uint32_t i = 0; i < attribs; i++) {
@@ -82,7 +83,7 @@
         aVars.push_back(GrGLSLShaderVar(aname.c_str(),
                                       kVec4f_GrSLType,
                                       GrShaderVar::kAttribute_TypeModifier));
-        aVars.back().appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+        aVars.back().appendDecl(glslCaps, &vshaderTxt);
         vshaderTxt.append(";\n");
 
     }
@@ -93,7 +94,7 @@
         oVars.push_back(GrGLSLShaderVar(oname.c_str(),
                                       kVec4f_GrSLType,
                                       GrShaderVar::kVaryingOut_TypeModifier));
-        oVars.back().appendDecl(ctx->caps()->glslCaps(), &vshaderTxt);
+        oVars.back().appendDecl(glslCaps, &vshaderTxt);
         vshaderTxt.append(";\n");
     }
 
@@ -118,12 +119,11 @@
     // setup fragment shader
     GrGLSLShaderVar oFragColor("o_FragColor", kVec4f_GrSLType, GrShaderVar::kOut_TypeModifier);
     SkString fshaderTxt(version);
-    GrGLAppendGLSLDefaultFloatPrecisionDeclaration(kDefault_GrSLPrecision, gl->fStandard,
-                                                   &fshaderTxt);
+    GrGLSLAppendDefaultFloatPrecisionDeclaration(kDefault_GrSLPrecision, *glslCaps, &fshaderTxt);
 
     const char* fsOutName;
-    if (ctx->caps()->glslCaps()->mustDeclareFragmentShaderOutput()) {
-        oFragColor.appendDecl(ctx->caps()->glslCaps(), &fshaderTxt);
+    if (glslCaps->mustDeclareFragmentShaderOutput()) {
+        oFragColor.appendDecl(glslCaps, &fshaderTxt);
         fshaderTxt.append(";\n");
         fsOutName = oFragColor.c_str();
     } else {
@@ -132,7 +132,7 @@
 
     for (uint32_t i = 0; i < maxAttribs; i++) {
         oVars[i].setTypeModifier(GrShaderVar::kVaryingIn_TypeModifier);
-        oVars[i].appendDecl(ctx->caps()->glslCaps(), &fshaderTxt);
+        oVars[i].appendDecl(glslCaps, &fshaderTxt);
         fshaderTxt.append(";\n");
     }