Stop testing SkImageDecoder in DM/nanobench

dm/DM.cpp

Index: dm/DM.cpp
diff --git a/dm/DM.cpp b/dm/DM.cpp
index 9f2684cea9c8068fcc45e80131ce6e8eca5ca912..d53402e723b6295dc121a2c8bd0358570f2bea23 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -519,20 +519,6 @@ static bool brd_supported(const char* ext) {
     return false;
 }
 
-static bool is_raw(const SkString& file) {
-    static const char* const exts[] = {
-        "arw", "cr2", "dng", "nef", "nrw", "orf", "raf", "rw2", "pef", "srw",
-        "ARW", "CR2", "DNG", "NEF", "NRW", "ORF", "RAF", "RW2", "PEF", "SRW",
-    };
-
-    for (uint32_t i = 0; i < SK_ARRAY_COUNT(exts); i++) {
-        if (file.endsWith(exts[i])) {
-            return true;
-        }
-    }
-    return false;
-}
-
 static void gather_srcs() {
     for (const skiagm::GMRegistry* r = skiagm::GMRegistry::Head(); r; r = r->next()) {
         push_src("gm", "", new GMSrc(r->factory()));
@@ -561,9 +547,6 @@ static void gather_srcs() {
                 SkOSFile::Iter it(flag, exts[j]);
                 for (SkString file; it.next(&file); ) {
                     SkString path = SkOSPath::Join(flag, file.c_str());
-                    if (!is_raw(file)) {
-                        push_src("image", "decode", new ImageSrc(path)); // Decode entire image
-                    }
                     push_codec_srcs(path);
                     if (brd_supported(exts[j])) {
                         push_brd_srcs(path);
@@ -572,9 +555,6 @@ static void gather_srcs() {
             }
         } else if (sk_exists(flag)) {
             // assume that FLAGS_images[i] is a valid image if it is a file.
-            if (!is_raw(SkString(flag))) {
-                push_src("image", "decode", new ImageSrc(flag)); // Decode entire image.
-            }
             push_codec_srcs(flag);
             push_brd_srcs(flag);
         }