SkQP: make_gmkb, gm_knowledge (GM Knowledgebase)

Add a real implementation for gm_knowledge.h  This depends on
the presence of files in the form $GMK_DIR/foo/{max,min}.png

The implementation also writes out failures in a report directory.

Add a utility: experimental/make_gmkb which is a stand-alone
go executable that generates the foo/{max,min}.png data.

tools/skqp/README.md has instructions on running SkQP.

Also: add SkFontMgrPriv.h

Change-Id: Ibe1e9a7e7de143d14eee3877f5f2d2d8713f7f49
Reviewed-on: https://skia-review.googlesource.com/65380
Reviewed-by: Yuqian Li <liyuqian@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/dm/DM.cpp b/dm/DM.cpp
index 4deaa2fbb7..058fb9da03 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -22,10 +22,11 @@
 #include "SkCommonFlagsGpuThreads.h"
 #include "SkCommonFlagsPathRenderer.h"
 #include "SkData.h"
-#include "SkDocument.h"
 #include "SkDebugfTracer.h"
+#include "SkDocument.h"
 #include "SkEventTracingPriv.h"
 #include "SkFontMgr.h"
+#include "SkFontMgrPriv.h"
 #include "SkGraphics.h"
 #include "SkHalf.h"
 #include "SkLeanWindows.h"
@@ -1299,9 +1300,6 @@ static sk_sp<SkTypeface> create_from_name(const char familyName[], SkFontStyle s
 
 extern sk_sp<SkTypeface> (*gCreateTypefaceDelegate)(const char [], SkFontStyle );
 
-extern sk_sp<SkFontMgr> (*gSkFontMgr_DefaultFactory)();
-
-
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);