Add visualbench option for device-independent fonts

tools/VisualBench/VisualBench.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  */
 
 #include "VisualBench.h"
 
 #include "GrContext.h"
 #include "ProcStats.h"
 #include "SkApplication.h"
 #include "SkCanvas.h"
 #include "SkCommandLineFlags.h"
 #include "SkGraphics.h"
 #include "SkGr.h"
 #include "SkOSFile.h"
 #include "SkStream.h"
 #include "Stats.h"
 #include "VisualLightweightBenchModule.h"
 #include "VisualInteractiveModule.h"
 #include "gl/GrGLInterface.h"
 
 DEFINE_bool2(fullscreen, f, true, "Run fullscreen.");
 DEFINE_bool2(interactive, n, false, "Run in interactive mode.");
+DEFINE_bool2(dif, d, false, "Use device-independent fonts.");
 
 VisualBench::VisualBench(void* hwnd, int argc, char** argv)
     : INHERITED(hwnd) {
     SkCommandLineFlags::Parse(argc, argv);
 
-    // this has to happen after commandline parsing
+    // these have to happen after commandline parsing
+    if (FLAGS_dif) {
+        const SkSurfaceProps& props(INHERITED::getSurfaceProps());
+        uint32_t flags = SkSurfaceProps::kUseDeviceIndependentFonts_Flag | props.flags();
+        INHERITED::setSurfaceProps(SkSurfaceProps(flags, props.pixelGeometry()));
+    }
     fModule.reset(new VisualLightweightBenchModule(this));
     if (FLAGS_interactive) {
         fModule.reset(new VisualInteractiveModule(this));
     }
 
     this->setTitle();
     this->setupBackend();
 }
 
 VisualBench::~VisualBench() {
@@ skipping 116 matching lines @@
 }
 
 void application_term() {
     SkEvent::Term();
 }
 
 SkOSWindow* create_sk_window(void* hwnd, int argc, char** argv) {
     return new VisualBench(hwnd, argc, argv);
 }