Enable CopyTextureCHROMIUM in Blink for Tex{Sub}Image2D with more cases

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

Index: third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
index f209bd43f1eccbbc53ede0a4403f7225ece22784..47eae64de91e1ac45dbb06d051642e99d936729a 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
@@ -634,24 +634,6 @@ IntRect WebGL2RenderingContextBase::GetTextureSourceSubRectangle(
   return IntRect(unpack_skip_pixels_, unpack_skip_rows_, width, height);
 }
 
-bool WebGL2RenderingContextBase::CanUseTexImageByGPU(
-    TexImageFunctionID function_id,
-    GLint internalformat,
-    GLenum type) {
-  switch (internalformat) {
-    case GL_RGB565:
-    case GL_RGBA4:
-    case GL_RGB5_A1:
-      // FIXME: ES3 limitation that CopyTexImage with sized internalformat,
-      // component sizes have to match the source color format.
-      return false;
-    default:
-      break;
-  }
-  return WebGLRenderingContextBase::CanUseTexImageByGPU(function_id,
-                                                        internalformat, type);
-}
-
 void WebGL2RenderingContextBase::invalidateFramebuffer(
     GLenum target,
     const Vector<GLenum>& attachments) {