Move shader precision modifier check onto GLSLCaps

src/gpu/gl/GrGLCaps.cpp

Index: src/gpu/gl/GrGLCaps.cpp
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index c9703b16f83b442dc1c10ebf0edba2a3a2970669..9a185be72d698765b987d4962963c1a60cf27727 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -92,6 +92,7 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
             glslCaps->fFBFetchColorName = "gl_LastFragColorARM";
             glslCaps->fFBFetchExtensionString = "GL_ARM_shader_framebuffer_fetch";
         }
+        glslCaps->fUsesPrecisionModifiers = true;
     }
 
     glslCaps->fBindlessTextureSupport = ctxInfo.hasExtension("GL_NV_bindless_texture");