Revert 111170 - Move GL headers from gpu to third_party/khronos

gpu/gpu.gyp

Index: gpu/gpu.gyp
===================================================================
--- gpu/gpu.gyp	(revision 111172)
+++ gpu/gpu.gyp	(working copy)
@@ -30,11 +30,11 @@
       'target_name': 'command_buffer_common',
       'type': 'static_library',
       'include_dirs': [
-        '<(DEPTH)/third_party/khronos',
+        '.',
       ],
       'all_dependent_settings': {
         'include_dirs': [
-          '<(DEPTH)/third_party/khronos',
+          '.',
         ],
       },
       'dependencies': [
@@ -90,7 +90,7 @@
       'all_dependent_settings': {
         'include_dirs': [
           # For GLES2/gl2.h
-          '<(DEPTH)/third_party/khronos',
+          '.',
         ],
       },
       'sources': [
@@ -112,7 +112,7 @@
       'all_dependent_settings': {
         'include_dirs': [
           # For GLES2/gl2.h
-          '<(DEPTH)/third_party/khronos',
+          '.',
         ],
       },
       'sources': [
@@ -152,12 +152,10 @@
       'type': 'static_library',
       'include_dirs': [
         '..',
-        '<(DEPTH)/third_party/khronos',
       ],
       'all_dependent_settings': {
         'include_dirs': [
           '..',
-          '<(DEPTH)/third_party/khronos',
         ],
       },
       'dependencies': [
@@ -179,12 +177,10 @@
       'type': 'static_library',
       'include_dirs': [
         '..',
-        '<(DEPTH)/third_party/khronos',
       ],
       'all_dependent_settings': {
         'include_dirs': [
           '..',
-          '<(DEPTH)/third_party/khronos',
         ],
       },
       'dependencies': [
@@ -331,7 +327,6 @@
       ],
       'include_dirs': [
         '..',
-        '<(DEPTH)/third_party/khronos',
       ],
       'sources': [
         'command_buffer/common/gl_mock.h',
@@ -350,7 +345,6 @@
       ],
       'include_dirs': [
         '..',
-        '<(DEPTH)/third_party/khronos',
       ],
       'sources': [
         'ipc/gpu_command_buffer_traits.cc',