Add GL_TEXTURE_EXTERNAL_OES as supported texture target for CHROMIUM_map_image.

ui/gl/gl_image_shm.h

Index: ui/gl/gl_image_shm.h
diff --git a/ui/gl/gl_image_shm.h b/ui/gl/gl_image_shm.h
index efff1ed52bc1f251152a0c122cb592c6e93dffa2..5240cf584b4a03bf7f579b9d3cdfcc72dcdf6593 100644
--- a/ui/gl/gl_image_shm.h
+++ b/ui/gl/gl_image_shm.h
@@ -6,6 +6,7 @@
 #define UI_GL_GL_IMAGE_SHM_H_
 
 #include "base/memory/scoped_ptr.h"
+#include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_image.h"
 
 namespace gfx {
@@ -31,6 +32,8 @@ class GL_EXPORT GLImageShm : public GLImage {
   scoped_ptr<base::SharedMemory> shared_memory_;
   gfx::Size size_;
   unsigned internalformat_;
+  GLuint external_texture_id_;

[reveman, 2014/03/14 14:06:22]

nit: you use GLint for texture ids in the .cc file but GLuint here. Please make
it consistent.

[sohanjg, 2014/03/15 10:03:53]

this maybe tricky as in .cc we do a glGetIntegerv() to get the tex id, which
will not accept an unsigned integer, and GenTex/BindTex will not accept a signed
integer as tex id.

[reveman, 2014/03/15 14:08:45]

Ok. Current code is good then.

+  EGLImageKHR egl_image_;
 
   DISALLOW_COPY_AND_ASSIGN(GLImageShm);
 };