Move shader precision modifier check onto GLSLCaps

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 38105ef1cea26cc920798de9f5dd17aeae52702c..449ceabd76915b896009bad1c76ee64dd850b846 100755
--- a/src/gpu/glsl/GrGLSLCaps.cpp
+++ b/src/gpu/glsl/GrGLSLCaps.cpp
@@ -17,6 +17,7 @@ GrGLSLCaps::GrGLSLCaps(const GrContextOptions& options) {
     fFBFetchSupport = false;
     fFBFetchNeedsCustomOutput = false;
     fBindlessTextureSupport = false;
+    fUsesPrecisionModifiers = false;
     fFBFetchColorName = nullptr;
     fFBFetchExtensionString = nullptr;
     fAdvBlendEqInteraction = kNotSupported_AdvBlendEqInteraction;
@@ -42,6 +43,7 @@ SkString GrGLSLCaps::dump() const {
     r.appendf("FB Fetch Support: %s\n", (fFBFetchSupport ? "YES" : "NO"));
     r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES" : "NO"));
     r.appendf("Bindless texture support: %s\n", (fBindlessTextureSupport ? "YES" : "NO"));
+    r.appendf("Uses precision modifiers: %s\n", (fUsesPrecisionModifiers ? "YES" : "NO"));
     r.appendf("Advanced blend equation interaction: %s\n",
               kAdvBlendEqInteractionStr[fAdvBlendEqInteraction]);
     return r;