command_buffer: Implement path rendering functions for CHROMIUM_path_rendering

ui/gl/gl_bindings.h

Index: ui/gl/gl_bindings.h
diff --git a/ui/gl/gl_bindings.h b/ui/gl/gl_bindings.h
index 082d240f3a3f77332791d2e496644ee30a3f4074..198cfd10e7549365d5ac0d52079623c858491f64 100644
--- a/ui/gl/gl_bindings.h
+++ b/ui/gl/gl_bindings.h
@@ -229,12 +229,36 @@
 #endif
 
 #ifndef GL_CHROMIUM_path_rendering
+#define GL_CHROMIUM_path_rendering 1
 // These match the corresponding values in NV_path_rendering
 // extension, eg tokens with CHROMIUM replaced with NV.
 #define GL_PATH_MODELVIEW_MATRIX_CHROMIUM 0x0BA6
 #define GL_PATH_PROJECTION_MATRIX_CHROMIUM 0x0BA7
 #define GL_PATH_MODELVIEW_CHROMIUM 0x1700
 #define GL_PATH_PROJECTION_CHROMIUM 0x1701
+#define GL_FLAT_CHROMIUM 0x1D00
+#define GL_CLOSE_PATH_CHROMIUM 0x00
+#define GL_MOVE_TO_CHROMIUM 0x02
+#define GL_LINE_TO_CHROMIUM 0x04
+#define GL_QUADRATIC_CURVE_TO_CHROMIUM 0x0A
+#define GL_CUBIC_CURVE_TO_CHROMIUM 0x0C
+#define GL_CONIC_CURVE_TO_CHROMIUM 0x1A
+#define GL_PATH_STROKE_WIDTH_CHROMIUM 0x9075
+#define GL_PATH_END_CAPS_CHROMIUM 0x9076
+#define GL_PATH_JOIN_STYLE_CHROMIUM 0x9079
+#define GL_PATH_MITER_LIMIT_CHROMIUM 0x907a
+#define GL_PATH_STROKE_BOUND_CHROMIUM 0x9086
+#define GL_COUNT_UP_CHROMIUM 0x9088
+#define GL_COUNT_DOWN_CHROMIUM 0x9089
+#define GL_CONVEX_HULL_CHROMIUM 0x908B
+#define GL_BOUNDING_BOX_CHROMIUM 0x908D
+#define GL_SQUARE_CHROMIUM 0x90a3
+#define GL_ROUND_CHROMIUM 0x90a4
+#define GL_BEVEL_CHROMIUM 0x90a6
+#define GL_MITER_REVERT_CHROMIUM 0x90a7
+#define GL_PATH_STENCIL_FUNC_CHROMIUM 0x90B7
+#define GL_PATH_STENCIL_REF_CHROMIUM 0x90B8
+#define GL_PATH_STENCIL_VALUE_MASK_CHROMIUM 0x90B9
 #endif
 
 #ifndef GL_KHR_blend_equation_advanced