GPU process does one-off EGL initialization on linux....

app/gfx/gl/gl_context_linux.cc

 // Copyright (c) 2010 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.
 
 // This file implements the ViewGLContext and PbufferGLContext classes.
 
 #include "app/gfx/gl/gl_context.h"
 
 #include <GL/osmesa.h>
 
@@ skipping 152 matching lines @@
     kGLImplementationOSMesaGL
   };
 
   if (!InitializeBestGLBindings(
            kAllowedGLImplementations,
            kAllowedGLImplementations + arraysize(kAllowedGLImplementations))) {
     LOG(ERROR) << "InitializeBestGLBindings failed.";
     return false;
   }
 
-  // Only check the GLX version if we are in fact using GLX. We might actually
-  // be using the mock GL implementation.
-  if (GetGLImplementation() == kGLImplementationDesktopGL) {
-    Display* display = x11_util::GetXDisplay();
-    int major, minor;
-    if (!glXQueryVersion(display, &major, &minor)) {
-      LOG(ERROR) << "glxQueryVersion failed";
-      return false;
+  switch (GetGLImplementation()) {
+    case kGLImplementationDesktopGL: {
+      // Only check the GLX version if we are in fact using GLX. We might
+      // actually be using the mock GL implementation.
+      Display* display = x11_util::GetXDisplay();
+      int major, minor;
+      if (!glXQueryVersion(display, &major, &minor)) {
+        LOG(ERROR) << "glxQueryVersion failed";
+        return false;
+      }
+
+      if (major == 1 && minor < 3) {
+        LOG(WARNING) << "GLX 1.3 or later is recommended.";
+      }
+
+      break;
     }
-
-    if (major == 1 && minor < 3) {
-      LOG(WARNING) << "GLX 1.3 or later is recommended.";
-    }
+    case kGLImplementationEGLGLES2:
+      if (!BaseEGLContext::InitializeOneOff()) {
+        LOG(ERROR) << "BaseEGLContext::InitializeOneOff failed.";
+        return false;
+      }
+      break;
+    default:
+      break;
   }
 
   initialized = true;
   return true;
 }
 
 bool ViewGLContext::Initialize(bool multisampled) {
   if (multisampled) {
     LOG(WARNING) << "Multisampling not implemented.";
   }
@@ skipping 550 matching lines @@
     }
     case kGLImplementationMockGL:
       return new StubGLContext;
     default:
       NOTREACHED();
       return NULL;
   }
 }
 
 }  // namespace gfx