Expose GpuMemoryBufferId through glGetImageivCHROMIUM.

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 109 matching lines @@
 #endif
 
 #ifndef GL_RGB_YCBCR_422_CHROMIUM
 #define GL_RGB_YCBCR_422_CHROMIUM 0x78FB
 #endif
 
 #ifndef GL_RGB_YCBCR_420V_CHROMIUM
 #define GL_RGB_YCBCR_420V_CHROMIUM 0x78FC
 #endif
 
+#ifndef GL_GPU_MEMORY_BUFFER_ID
+#define GL_GPU_MEMORY_BUFFER_ID 0x78FD
+#endif
+
 #ifdef GL_GLEXT_PROTOTYPES
 GL_APICALL GLuint GL_APIENTRY glCreateGpuMemoryBufferImageCHROMIUM(
     GLsizei width,
     GLsizei height,
     GLenum internalformat,
     GLenum usage);
+
+GL_APICALL void GL_APIENTRY glGetImageivCHROMIUM(
+    GLuint image_id,
+    GLenum param,
+    GLint* data);
 #endif
 typedef GLuint(GL_APIENTRYP PFNGLCREATEGPUMEMORYBUFFERIMAGECHROMIUMPROC)(
     GLsizei width,
     GLsizei height,
     GLenum internalformat,
     GLenum usage);
+typedef GLint(GL_APIENTRYP PFNGLGETIMAGEIVCHROMIUMPROC)(
+    GLuint image_id,
+    GLenum param);
 #endif  /* GL_CHROMIUM_gpu_memory_buffer_image */
 
 /* GL_CHROMIUM_map_sub */
 #ifndef GL_CHROMIUM_map_sub
 #define GL_CHROMIUM_map_sub 1
 
 #ifndef GL_READ_ONLY
 #define GL_READ_ONLY 0x88B8
 #endif
 
@@ skipping 1046 matching lines @@
 GL_APICALL void GL_APIENTRY glCoverageModulationCHROMIUM(GLenum components);
 #endif
 #define GL_COVERAGE_MODULATION_CHROMIUM 0x9332
 #endif /* GL_CHROMIUM_framebuffer_mixed_samples */
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif  // GPU_GLES2_GL2EXTCHROMIUM_H_