Revert "Implement GL_KHR_debug."

This reverts commit 6c521b7a70a53b1c9f7762e53e34b5a8146b0f7b.

Change-Id: I6ff981198e31f34d3e405edea6277ee75516d6ee
Reviewed-on: https://chromium-review.googlesource.com/319820
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/Framebuffer.cpp b/src/libANGLE/Framebuffer.cpp
index 1c2646d..c388d1e 100644
--- a/src/libANGLE/Framebuffer.cpp
+++ b/src/libANGLE/Framebuffer.cpp
@@ -40,8 +40,7 @@
 }
 
 Framebuffer::Data::Data()
-    : mLabel(),
-      mColorAttachments(1),
+    : mColorAttachments(1),
       mDrawBufferStates(1, GL_NONE),
       mReadBufferState(GL_COLOR_ATTACHMENT0_EXT)
 {
@@ -49,8 +48,7 @@
 }
 
 Framebuffer::Data::Data(const Caps &caps)
-    : mLabel(),
-      mColorAttachments(caps.maxColorAttachments),
+    : mColorAttachments(caps.maxColorAttachments),
       mDrawBufferStates(caps.maxDrawBuffers, GL_NONE),
       mReadBufferState(GL_COLOR_ATTACHMENT0_EXT)
 {
@@ -61,11 +59,6 @@
 {
 }
 
-const std::string &Framebuffer::Data::getLabel()
-{
-    return mLabel;
-}
-
 const FramebufferAttachment *Framebuffer::Data::getReadAttachment() const
 {
     ASSERT(mReadBufferState == GL_BACK || (mReadBufferState >= GL_COLOR_ATTACHMENT0 && mReadBufferState <= GL_COLOR_ATTACHMENT15));
@@ -186,16 +179,6 @@
     SafeDelete(mImpl);
 }
 
-void Framebuffer::setLabel(const std::string &label)
-{
-    mData.mLabel = label;
-}
-
-const std::string &Framebuffer::getLabel() const
-{
-    return mData.mLabel;
-}
-
 void Framebuffer::detachTexture(GLuint textureId)
 {
     detachResourceById(GL_TEXTURE, textureId);