Upstream: GL implementation on Android

ui/gfx/gl/gl.gyp

 # Copyright (c) 2011 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
 
   'targets': [
@@ skipping 22 matching lines @@
           '<(DEPTH)/third_party/mesa/MesaLib/include',
           '<(gl_binding_output_dir)',
         ],
       },
      'sources': [
         'gl_bindings.h',
         'gl_bindings_skia_in_process.cc',
         'gl_bindings_skia_in_process.h',
         'gl_context.cc',
         'gl_context.h',
+        'gl_context_android.cc',
         'gl_context_linux.cc',
         'gl_context_mac.mm',
         'gl_context_osmesa.cc',
         'gl_context_osmesa.h',
         'gl_context_stub.cc',
         'gl_context_stub.h',
         'gl_context_win.cc',
         'gl_export.h',
         'gl_implementation.cc',
         'gl_implementation.h',
+        'gl_implementation_android.cc',
         'gl_implementation_linux.cc',
         'gl_implementation_mac.cc',
         'gl_implementation_win.cc',
         'gl_interface.cc',
         'gl_interface.h',
         'gl_share_group.cc',
         'gl_share_group.h',
         'gl_surface.cc',
         'gl_surface.h',
         'gl_surface_linux.cc',
@@ skipping 44 matching lines @@
             '<(gl_binding_output_dir)/gl_bindings_autogen_wgl.h',
           ],
           'action': [
             'python',
             'generate_bindings.py',
             '<(gl_binding_output_dir)',
           ],
         },
       ],
       'conditions': [
-        ['OS != "mac" and OS != "android"', {
+        ['OS != "mac"', {
           'sources': [
             'egl_util.cc',
             'egl_util.h',
             'gl_context_egl.cc',
             'gl_context_egl.h',
             'gl_surface_egl.cc',
             'gl_surface_egl.h',
             '<(gl_binding_output_dir)/gl_bindings_autogen_egl.cc',
             '<(gl_binding_output_dir)/gl_bindings_autogen_egl.h',
           ],
@@ skipping 45 matching lines @@
           },
         }],
         ['OS=="mac" and use_aura == 1', {
           'sources': [
             'gl_context_nsview.mm',
             'gl_context_nsview.h',
             'gl_surface_nsview.mm',
             'gl_surface_nsview.h',
           ],
         }],
+        ['OS=="android"', {
+          'sources!': [            
+            '<(gl_binding_output_dir)/gl_bindings_autogen_osmesa.cc',
+            '<(gl_binding_output_dir)/gl_bindings_autogen_osmesa.h',
+            'system_monitor_posix.cc',
+          ],
+          'defines': [
+            'GL_GLEXT_PROTOTYPES',
+            'EGL_EGLEXT_PROTOTYPES',
+          ],
+        }],
       ],
     },
   ],
 }