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, 1 insertions, 20 deletions

diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index a768b37105..28401fe9e6 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -46,7 +46,6 @@ GrGLCaps::GrGLCaps(const GrContextOptions& contextOptions,
     fUseNonVBOVertexAndIndexDynamicData = false;
     fIsCoreProfile = false;
     fBindFragDataLocationSupport = false;
-    fExternalTextureSupport = false;
     fSRGBWriteControl = false;
     fRGBA8888PixelsOpsAreSlow = false;
     fPartialFBOReadIsSlow = false;
@@ -260,16 +259,6 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
     fBindUniformLocationSupport = false;
 #endif
 
-    if (ctxInfo.hasExtension("GL_OES_EGL_image_external")) {
-        if (ctxInfo.glslGeneration() == k110_GrGLSLGeneration) {
-            fExternalTextureSupport = true;
-        } else if (ctxInfo.hasExtension("GL_OES_EGL_image_external_essl3") ||
-                   ctxInfo.hasExtension("OES_EGL_image_external_essl3")) {
-            // At least one driver has been found that has this extension without the "GL_" prefix.
-            fExternalTextureSupport = true;
-        }
-    }
-
 #ifdef SK_BUILD_FOR_WIN
     // We're assuming that on Windows Chromium we're using ANGLE.
     bool isANGLE = kANGLE_GrGLDriver == ctxInfo.driver() ||
@@ -599,21 +588,13 @@ void GrGLCaps::initGLSL(const GrGLContextInfo& ctxInfo) {
         glslCaps->fSecondaryOutputExtensionString = "GL_EXT_blend_func_extended";
     }
 
-    if (fExternalTextureSupport) {
-        if (ctxInfo.glslGeneration() == k110_GrGLSLGeneration) {
-            glslCaps->fExternalTextureExtensionString = "GL_OES_EGL_image_external";
-        } else {
-            glslCaps->fExternalTextureExtensionString = "GL_OES_EGL_image_external_essl3";
-        }
-    }
-
     // The Tegra3 compiler will sometimes never return if we have min(abs(x), 1.0), so we must do
     // the abs first in a separate expression.
     if (kTegra3_GrGLRenderer == ctxInfo.renderer()) {
         glslCaps->fCanUseMinAndAbsTogether = false;
     }
 
-    // On Intel GPU there is an issue where it reads the second argument to atan "- %s.x" as an int
+    // On Intel GPU there is an issue where it reads the second arguement to atan "- %s.x" as an int
     // thus must us -1.0 * %s.x to work correctly
     if (kIntel_GrGLVendor == ctxInfo.vendor()) {
         glslCaps->fMustForceNegatedAtanParamToFloat = true;