Revert of Updated Khronos GLES2 headers.

gpu/command_buffer/build_gles2_cmd_buffer.py

Index: gpu/command_buffer/build_gles2_cmd_buffer.py
diff --git a/gpu/command_buffer/build_gles2_cmd_buffer.py b/gpu/command_buffer/build_gles2_cmd_buffer.py
index a10a6126c802a6661c27736b06fd7b6c534ca4ac..0f2e49a31f115d1d8835c45ec5070e23c7b83d18 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -53,17 +53,9 @@
   'GLclampf': 'float',
   'GLvoid': 'void',
   'GLfixed': 'int',
-  'GLclampx': 'int'
-}
-
-_GL_TYPES_32 = {
+  'GLclampx': 'int',
   'GLintptr': 'long int',
-  'GLsizeiptr': 'long int'
-}
-
-_GL_TYPES_64 = {
-  'GLintptr': 'long long int',
-  'GLsizeiptr': 'long long int'
+  'GLsizeiptr': 'long int',
 }
 
 # Capabilites selected with glEnable
@@ -7601,13 +7593,6 @@
       file.Write("\n#ifndef __gl2_h_\n")
       for (k, v) in _GL_TYPES.iteritems():
         file.Write("typedef %s %s;\n" % (v, k))
-      file.Write("#ifdef _WIN64\n")
-      for (k, v) in _GL_TYPES_64.iteritems():
-        file.Write("typedef %s %s;\n" % (v, k))
-      file.Write("#else\n")
-      for (k, v) in _GL_TYPES_32.iteritems():
-        file.Write("typedef %s %s;\n" % (v, k))
-      file.Write("#endif  // _WIN64\n")
       file.Write("#endif  // __gl2_h_\n\n")
 
     for interface in self.pepper_interfaces: