Add command_buffer_gles2

gpu/gles2_conform_support/egl/egl.cc

Index: gpu/gles2_conform_support/egl/egl.cc
diff --git a/gpu/gles2_conform_support/egl/egl.cc b/gpu/gles2_conform_support/egl/egl.cc
index 343937fa0f3d4eed3a0b25dfc7fc06b4871022a6..4aa1ac8a40df7cff1da77e750216dab783705aaa 100644
--- a/gpu/gles2_conform_support/egl/egl.cc
+++ b/gpu/gles2_conform_support/egl/egl.cc
@@ -102,12 +102,16 @@ EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor) {
   if (!display->Initialize())
     return EglError(EGL_NOT_INITIALIZED, EGL_FALSE);
 
-  int argc = 1;
-  const char* const argv[] = {
-    "dummy"
-  };
-  base::CommandLine::Init(argc, argv);
-  gfx::GLSurface::InitializeOneOff();
+  // eglInitialze can be called multiple times, prevent InitializeOneOff from

[no sievers, 2015/08/27 19:21:28]

nit: s/eglInitialze/eglInitialize

[hendrikw, 2015/08/27 20:34:44]

Done.

+  // being called multiple times.

[no sievers, 2015/08/27 19:21:28]

Actually InitializeOneOff() already seems to handle being called multiple times,
see gl_surface_glx/egl/wgl.cc

[hendrikw, 2015/08/27 20:34:44]

It DCHECKS if called more than once because of DCHECK_EQ(kGLImplementationNone,
GetGLImplementation()), and in
InitializeStaticGLBindings, it dchecks a second time.

The DCHECK is there to prevent the initialization from changing GL
implementations in tests, but in my case, it prevents InitializeOneOff from
being called multiple times.

For my use case, wiring this off should be fine.

+  if (gfx::GetGLImplementation() == gfx::kGLImplementationNone) {
+    int argc = 1;
+    const char* const argv[] = {
+      "dummy"
+    };
+    base::CommandLine::Init(argc, argv);
+    gfx::GLSurface::InitializeOneOff();
+  }
 
   *major = 1;
   *minor = 4;