command_buffer: Implement path rendering functions for CHROMIUM_path_rendering

gpu/skia_bindings/gl_bindings_skia_cmd_buffer.cc

Index: gpu/skia_bindings/gl_bindings_skia_cmd_buffer.cc
diff --git a/gpu/skia_bindings/gl_bindings_skia_cmd_buffer.cc b/gpu/skia_bindings/gl_bindings_skia_cmd_buffer.cc
index 36ff45bc7a3bcb563399537c819964fdd1907f4a..024c9ccf4e2236c181880c815ff58cc770715470 100644
--- a/gpu/skia_bindings/gl_bindings_skia_cmd_buffer.cc
+++ b/gpu/skia_bindings/gl_bindings_skia_cmd_buffer.cc
@@ -146,8 +146,27 @@ GrGLInterface* CreateCommandBufferSkiaGLBinding() {
   functions->fBindUniformLocation = glBindUniformLocationCHROMIUM;
   functions->fBlitFramebuffer = glBlitFramebufferCHROMIUM;
   functions->fGenerateMipmap = glGenerateMipmap;
-  functions->fMatrixLoadf = glMatrixLoadfCHROMIUM;
-  functions->fMatrixLoadIdentity = glMatrixLoadIdentityCHROMIUM;
+  if (false) {
+    // These are disabled until the full extension is implemented.
+    // Otherwise the interface fails validation and the context can not
+    // be created.
+    functions->fMatrixLoadf = glMatrixLoadfCHROMIUM;
+    functions->fMatrixLoadIdentity = glMatrixLoadIdentityCHROMIUM;
+    functions->fPathCommands = glPathCommandsCHROMIUM;
+    functions->fPathParameteri = glPathParameteriCHROMIUM;
+    functions->fPathParameterf = glPathParameterfCHROMIUM;
+    functions->fGenPaths = glGenPathsCHROMIUM;
+    functions->fIsPath = glIsPathCHROMIUM;
+    functions->fDeletePaths = glDeletePathsCHROMIUM;
+    functions->fPathStencilFunc = glPathStencilFuncCHROMIUM;
+    functions->fStencilFillPath = glStencilFillPathCHROMIUM;
+    functions->fStencilStrokePath = glStencilStrokePathCHROMIUM;
+    functions->fCoverFillPath = glCoverFillPathCHROMIUM;
+    functions->fCoverStrokePath = glCoverStrokePathCHROMIUM;
+    functions->fStencilThenCoverFillPath = glStencilThenCoverFillPathCHROMIUM;
+    functions->fStencilThenCoverStrokePath =
+        glStencilThenCoverStrokePathCHROMIUM;
+  }
 
   return interface;
 }