Add compressedTex{Sub}Image{2|3}D using PBO signatures to WebGL2

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.h

Index: third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.h
diff --git a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.h b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.h
index b2d07a276c2a4c45cc753b57b66564f8cab6d023..75929a91d3b2eb9da1f3a086e2b34ce37608f733 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.h
+++ b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.h
@@ -527,6 +527,43 @@ class WebGL2RenderingContextBase : public WebGLRenderingContextBase {
                                DOMArrayBufferView*,
                                GLuint,
                                GLuint);
+  void compressedTexImage2D(GLenum target,
+                            GLint level,
+                            GLenum internalformat,
+                            GLsizei width,
+                            GLsizei height,
+                            GLint border,
+                            GLsizei imageSize,
+                            GLintptr offset);
+  void compressedTexSubImage2D(GLenum target,
+                               GLint level,
+                               GLint xoffset,
+                               GLint yoffset,
+                               GLsizei width,
+                               GLsizei height,
+                               GLenum format,
+                               GLsizei imageSize,
+                               GLintptr offset);
+  void compressedTexImage3D(GLenum target,
+                            GLint level,
+                            GLenum internalformat,
+                            GLsizei width,
+                            GLsizei height,
+                            GLsizei depth,
+                            GLint border,
+                            GLsizei imageSize,
+                            GLintptr offset);
+  void compressedTexSubImage3D(GLenum target,
+                               GLint level,
+                               GLint xoffset,
+                               GLint yoffset,
+                               GLint zoffset,
+                               GLsizei width,
+                               GLsizei height,
+                               GLsizei depth,
+                               GLenum format,
+                               GLsizei imageSize,
+                               GLintptr offset);
 
   // Have to re-declare/re-define the following compressedTex{Sub}Image2D
   // functions from the base class. This is because the above