Reland: Check for ANGLE's implementation of texture_rectangle

ANGLE has implemented extension to support for texture_rectangle. Check
for its existence as well as GL_ARB_texture_rectangle extension.

Intended to follow up on Chrome side to avoid copy into texture 2d for
PaintCanvasVideoRenderer.

Bug: skia:7903

Origin change's info:
> Change-Id: I450aa7fcd08628831251a9e142fd50719723282d
> Reviewed-on: https://skia-review.googlesource.com/130962
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Weiliang Chen <weiliangc@chromium.org>

Change-Id: Ifec92bdc07ec2b2dae38ffe99ec275924cbd37d8
Reviewed-on: https://skia-review.googlesource.com/139272
Commit-Queue: Weiliang Chen <weiliangc@chromium.org>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/tools/gpu/gl/GLTestContext.cpp b/tools/gpu/gl/GLTestContext.cpp
index 7a67a8a..e11f1b0 100644
--- a/tools/gpu/gl/GLTestContext.cpp
+++ b/tools/gpu/gl/GLTestContext.cpp
@@ -317,8 +317,11 @@
 GrGLint GLTestContext::createTextureRectangle(int width, int height, GrGLenum internalFormat,
                                           GrGLenum externalFormat, GrGLenum externalType,
                                           GrGLvoid* data) {
-    if (!(kGL_GrGLStandard == fGL->fStandard && GrGLGetVersion(fGL.get()) >= GR_GL_VER(3, 1)) &&
-        !fGL->fExtensions.has("GL_ARB_texture_rectangle")) {
+    // Should match GrGLCaps check for fRectangleTextureSupport.
+    if (kGL_GrGLStandard != fGL->fStandard ||
+        (GrGLGetVersion(fGL.get()) < GR_GL_VER(3, 1) &&
+         !fGL->fExtensions.has("GL_ARB_texture_rectangle") &&
+         !fGL->fExtensions.has("GL_ANGLE_texture_rectangle"))) {
         return 0;
     }