Add subscribeUniform extension pipeline

gpu/GLES2/gl2extchromium.h

 // 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.
 
 // This file contains Chromium-specific GLES2 extensions declarations.
 
 #ifndef GPU_GLES2_GL2EXTCHROMIUM_H_
 #define GPU_GLES2_GL2EXTCHROMIUM_H_
 
 #include <GLES2/gl2.h>
@@ skipping 669 matching lines @@
 #endif
 
 #ifndef GL_OVERLAY_TRANSFORM_ROTATE_180_CHROMIUM
 #define GL_OVERLAY_TRANSFORM_ROTATE_180_CHROMIUM 0x9249
 #endif
 
 #ifndef GL_OVERLAY_TRANSFORM_ROTATE_270_CHROMIUM
 #define GL_OVERLAY_TRANSFORM_ROTATE_270_CHROMIUM 0x924A
 #endif
 
+/* GL_CHROMIUM_subscribe_uniform */
+#ifndef GL_CHROMIUM_subscribe_uniform
+#define GL_CHROMIUM_subscribe_uniform 1
+
+#ifndef GL_MOUSE_POSITION_CHROMIUM
+#define GL_MOUSE_POSITION_CHROMIUM 0x924B
+#endif
+
 #ifdef GL_GLEXT_PROTOTYPES
 GL_APICALL void GL_APIENTRY
+    glSubscribeUniformCHROMIUM(GLint location, GLenum target);
+GL_APICALL void GL_APIENTRY glUnsubscribeUniformCHROMIUM(GLint location);
+GL_APICALL void GL_APIENTRY glPopulateSubscribedUniformsCHROMIUM();
+#endif
+#endif /* GL_CHROMIUM_subscribe_uniform */
+
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY
     glScheduleOverlayPlaneCHROMIUM(GLint plane_z_order,
                                    GLenum plane_transform,
                                    GLuint overlay_texture_id,
                                    GLint bounds_x,
                                    GLint bounds_y,
                                    GLint bounds_width,
                                    GLint bounds_height,
                                    GLfloat uv_x,
                                    GLfloat uv_y,
                                    GLfloat uv_width,
@@ skipping 36 matching lines @@
 typedef void(GL_APIENTRYP PFNGLMATRIXLOADIDENTITYCHROMIUMPROC)(
     GLenum matrixMode);
 
 #endif /* GL_CHROMIUM_path_rendering */
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif  // GPU_GLES2_GL2EXTCHROMIUM_H_