Revert of Initial version of external_oes texture support and unit test (patchset #14 id:260001 of https://codereview.chromium.org/1451683002/ )

Reason for revert:
Error wrapping external texture in GrTexture on some devices.

Original issue's description:
> Initial version of external_oes texture support and unit test
>
> Committed: https://skia.googlesource.com/skia/+/27a048700778d4cebfc23301d1780649791b0e03

TBR=joshualitt@google.com,egdaniel@google.com,robertphillips@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1459323004

1 files changed, 3 insertions, 12 deletions

diff --git a/src/gpu/gl/GrGLGpu.h b/src/gpu/gl/GrGLGpu.h
index 637a1cf161..c8da150a0d 100644
--- a/src/gpu/gl/GrGLGpu.h
+++ b/src/gpu/gl/GrGLGpu.h
@@ -322,7 +322,7 @@ private:
 
     SkAutoTUnref<GrGLContext>  fGLContext;
 
-    void createCopyPrograms();
+    void createCopyProgram();
 
     // GL program-related state
     ProgramCache*               fProgramCache;
@@ -497,17 +497,8 @@ private:
         GrGLint     fTextureUniform;
         GrGLint     fTexCoordXformUniform;
         GrGLint     fPosXformUniform;
-    }                           fCopyPrograms[2];
-    GrGLuint                    fCopyProgramArrayBuffer;
-
-    static int TextureTargetToCopyProgramIdx(GrGLenum target) {
-        if (target == GR_GL_TEXTURE_2D) {
-            return 0;
-        } else {
-            SkASSERT(target == GR_GL_TEXTURE_EXTERNAL);
-            return 1;
-        }
-    }
+        GrGLuint    fArrayBuffer;
+    } fCopyProgram;
 
     TriState fMSAAEnabled;