gpu: Make gpu_perftests run and pass on mac.

gpu/perftests/texture_upload_perftest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <algorithm>
 #include <vector>
 
 #include "base/containers/small_map.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
@@ skipping 15 matching lines @@
 
 #define SHADER(Src) #Src
 
 // clang-format off
 const char kVertexShader[] =
 SHADER(
   attribute vec2 a_position;
   varying vec2 v_texCoord;
   void main() {
     gl_Position = vec4(a_position.x, a_position.y, 0.0, 1.0);
-    v_texCoord = vec2((a_position.x + 1) * 0.5, (a_position.y + 1) * 0.5);
+    v_texCoord = vec2((a_position.x + 1.0) * 0.5, (a_position.y + 1.0) * 0.5);
   }
 );
 const char kFragmentShader[] =
 SHADER(
   uniform sampler2D a_texture;
   varying vec2 v_texCoord;
   void main() {
     gl_FragColor = texture2D(a_texture, v_texCoord.xy);
   }
 );
@@ skipping 225 matching lines @@
   }
 
   for (const auto& entry : aggregates) {
     const auto m = entry.second.Divide(kUploadPerfTestRuns);
     m.PrintResult();
   }
 }
 
 }  // namespace
 }  // namespace gpu