GN: add tests to DM

BUILD.gn

 # Copyright 2016 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 declare_args() {
 }
 
 skia_public_includes = [
   "include/android",
@@ skipping 373 matching lines @@
     "tools/flags/SkCommonFlagsConfig.cpp",
   ]
   deps = [
     ":gpu_tool_utils",
   ]
 }
 
 test_lib("tool_utils") {
   public_include_dirs = [
     "tools",
+    "tools/debugger",
     "tools/timer",
   ]
   sources = [
     "src/images/SkForceLinking.cpp",
     "src/utils/SkMultiPictureDocumentReader.cpp",  # TODO(halcanary): move to tools?
     "tools/CrashHandler.cpp",
     "tools/ProcStats.cpp",
     "tools/Resources.cpp",
     "tools/ThermalManager.cpp",
+    "tools/UrlDataManager.cpp",
+    "tools/debugger/SkDebugCanvas.cpp",
+    "tools/debugger/SkDrawCommand.cpp",
+    "tools/debugger/SkJsonWriteBuffer.cpp",
+    "tools/debugger/SkObjectParser.cpp",
+    "tools/debugger/SkOverdrawMode.cpp",
     "tools/picture_utils.cpp",
     "tools/random_parse_path.cpp",
     "tools/sk_tool_utils.cpp",
     "tools/sk_tool_utils_font.cpp",
     "tools/timer/Timer.cpp",
   ]
   deps = [
     ":flags",
+    "//third_party/libpng",
+  ]
+  public_deps = [
+    "//third_party/jsoncpp",
   ]
 }
 
 gm_sources = exec_script("gyp/find.py",
                          [
                            "*.c*",
                            rebase_path("gm"),
                          ],
                          "list lines",
                          [])
 test_lib("gm") {
   public_include_dirs = [ "gm" ]
   sources = gm_sources
   deps = [
     ":gpu_tool_utils",
     ":skia",
     ":tool_utils",
   ]
 }
 
+tests_sources = exec_script("gyp/find.py",
+                            [
+                              "*.c*",
+                              rebase_path("tests"),
+                            ],
+                            "list lines",
+                            [])
+
+test_lib("tests") {
+  public_include_dirs = [ "tests" ]
+  sources = tests_sources - [
+              rebase_path("tests/FontMgrAndroidParserTest.cpp"),  # Android only
+              rebase_path("tests/PathOpsSkpClipTest.cpp"),  # alternate main
+              rebase_path("tests/RTConfRegistryTest.cpp"),  # TODO: delete
+              rebase_path("tests/SkSLErrorTest.cpp"),   # TODO: make work
+              rebase_path("tests/SkpSkGrTest.cpp"),  # doesn't compile
+              rebase_path("tests/skia_test.cpp"),  # alternate main
+            ]
+  deps = [
+    ":flags",
+    ":gpu_tool_utils",
+    ":skia",
+    ":tool_utils",
+    "//third_party/libpng",
+    "//third_party/zlib",
+  ]
+}
+
 bench_sources = exec_script("gyp/find.py",
                             [
                               "*.c*",
                               rebase_path("bench"),
                             ],
                             "list lines",
                             [])
 
 test_lib("bench") {
   public_include_dirs = [ "bench" ]
@@ skipping 10 matching lines @@
     ":tool_utils",
   ]
 }
 
 if (!is_component_build) {  # Our test tools use many non-SK_API APIs...
   executable("dm") {
     sources = [
       "dm/DM.cpp",
       "dm/DMJsonWriter.cpp",
       "dm/DMSrcSink.cpp",
-
-      # TODO: tests for real
-      "tests/Test.cpp",
     ]
     include_dirs = [ "tests" ]
     deps = [
       ":flags",
       ":gm",
       ":gpu_tool_utils",
       ":skia",
+      ":tests",
       ":tool_utils",
       "//third_party/jsoncpp",
       "//third_party/libpng",
     ]
     testonly = true
   }
 
   executable("monobench") {
     sources = [
       "tools/monobench.cpp",
@@ skipping 14 matching lines @@
       ":flags",
       ":gm",
       ":gpu_tool_utils",
       ":skia",
       ":tool_utils",
       "//third_party/jsoncpp",
     ]
     testonly = true
   }
 }