Move static GL binding initialization to //ui/gl/init.

ui/gl/gl_egl_api_implementation.cc

 // Copyright (c) 2012 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 "ui/gl/gl_egl_api_implementation.h"
 
 #include "base/command_line.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_implementation.h"
 
 namespace gl {
 
+namespace {
+
+void GL_BINDING_CALL MarshalClearDepthToClearDepthf(GLclampd depth) {
+  glClearDepthf(static_cast<GLclampf>(depth));
+}
+
+void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near,
+                                                    GLclampd z_far) {
+  glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far));
+}
+
+}  // namespace
+
 RealEGLApi* g_real_egl;
 
 void InitializeStaticGLBindingsEGL() {
   g_driver_egl.InitializeStaticBindings();
   if (!g_real_egl) {
     g_real_egl = new RealEGLApi();
   }
   g_real_egl->Initialize(&g_driver_egl);
   g_current_egl_context = g_real_egl;
   g_driver_egl.InitializeExtensionBindings();
+
+  // These two functions take single precision float rather than double
+  // precision float parameters in GLES.
+  ::gl::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf;
+  ::gl::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef;
 }
 
 void InitializeDebugGLBindingsEGL() {
   g_driver_egl.InitializeDebugBindings();
 }
 
 void ClearGLBindingsEGL() {
   if (g_real_egl) {
     delete g_real_egl;
     g_real_egl = NULL;
@@ skipping 70 matching lines @@
   if (vendor)
     info->vendor = vendor;
   if (version)
     info->version = version;
   if (extensions)
     info->extensions = extensions;
   return true;
 }
 
 }  // namespace gl