Revert to enabling all of -O2 as it exposes a bug in the toolchain.

gm/resizeimagefilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkBitmapDevice.h"
 #include "SkBitmapSource.h"
 #include "SkColor.h"
 #include "SkMatrixImageFilter.h"
 #include "SkRefCnt.h"
 
 namespace skiagm {
 
 class ResizeGM : public GM {
 public:
     ResizeGM() {
         this->setBGColor(0x00000000);
     }
 
 protected:
     virtual SkString onShortName() {
         return SkString("resizeimagefilter");
     }
 
+#ifdef SK_CPU_ARM64
+    // Skip tiled drawing on 64-bit ARM until https://skbug.com/2908 is fixed.
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+#endif
+
     void draw(SkCanvas* canvas,
               const SkRect& rect,
               const SkSize& deviceSize,
               SkPaint::FilterLevel filterLevel,
               SkImageFilter* input = NULL) {
         SkRect dstRect;
         canvas->getTotalMatrix().mapRect(&dstRect, rect);
         canvas->save();
         SkScalar deviceScaleX = SkScalarDiv(deviceSize.width(), dstRect.width());
         SkScalar deviceScaleY = SkScalarDiv(deviceSize.height(), dstRect.height());
@@ skipping 76 matching lines @@
 private:
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ResizeGM; }
 static GMRegistry reg(MyFactory);
 
 }