Remove formatType arg from computeCompressedImageSize.

BUG=angleproject:2230

Change-Id: Ie291ba05efa89bc4ea52966e975d5a21431a461f
Reviewed-on: https://chromium-review.googlesource.com/757877
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/validationES3.cpp b/src/libANGLE/validationES3.cpp
index 514b638..e8167eb 100644
--- a/src/libANGLE/validationES3.cpp
+++ b/src/libANGLE/validationES3.cpp
@@ -1386,8 +1386,7 @@
         return false;
     }
 
-    auto blockSizeOrErr =
-        formatInfo.computeCompressedImageSize(GL_UNSIGNED_BYTE, gl::Extents(width, height, depth));
+    auto blockSizeOrErr = formatInfo.computeCompressedImageSize(gl::Extents(width, height, depth));
     if (blockSizeOrErr.isError())
     {
         context->handleError(InvalidValue());
@@ -2015,8 +2014,7 @@
         return false;
     }
 
-    auto blockSizeOrErr =
-        formatInfo.computeCompressedImageSize(GL_UNSIGNED_BYTE, gl::Extents(width, height, depth));
+    auto blockSizeOrErr = formatInfo.computeCompressedImageSize(gl::Extents(width, height, depth));
     if (blockSizeOrErr.isError())
     {
         context->handleError(blockSizeOrErr.getError());