Add more filetypes to DM's image tests.

dm/DM.cpp

 // Main binary for DM.
 // For a high-level overview, please see dm/README.
 
 #include "CrashHandler.h"
 #include "LazyDecodeBitmap.h"
 #include "SkCommonFlags.h"
 #include "SkForceLinking.h"
 #include "SkGraphics.h"
 #include "SkOSFile.h"
 #include "SkPicture.h"
@@ skipping 231 matching lines @@
 
 
     SkTArray<SkString> skps;
     if (!FLAGS_skps.isEmpty()) {
         const char* suffixes[] = { "skp" };
         find_files(FLAGS_skps[0], suffixes, SK_ARRAY_COUNT(suffixes), &skps);
     }
 
     SkTArray<SkString> images;
     if (!FLAGS_images.isEmpty()) {
-        const char* suffixes[] = { "bmp", "gif", "jpg", "png", "webp", "ktx", "astc" };
+        const char* suffixes[] = {
+            "bmp", "gif", "jpg", "jpeg", "png", "webp", "ktx", "astc", "wbmp", "ico",
+            "BMP", "GIF", "JPG", "JPEG", "PNG", "WEBP", "KTX", "ASTC", "WBMP", "ICO",
+        };
         find_files(FLAGS_images[0], suffixes, SK_ARRAY_COUNT(suffixes), &images);
     }
 
     SkDebugf("%d GMs x %d configs, %d tests, %d pictures, %d images\n",
              gms.count(), configs.count(), tests.count(), skps.count(), images.count());
     DM::Reporter reporter;
 
     DM::TaskRunner tasks;
     kick_off_tests(tests, &reporter, &tasks);
     kick_off_gms(gms, configs, gpuAPI, &reporter, &tasks);
@@ skipping 15 matching lines @@
     report_failures(failures);
     return failures.count() > 0;
 }
 
 #if !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_NACL)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif