Compile all fiddle examples locally

Motivation: it would be a good idea if the API documentation examples
were checked into the skia repository, so we could make sure they
compile as part of the commit queue.

Fiddle would make/update a named fiddle each time it gets a new
commit of Skia, extracted from the code in the examples/ directory.
The docs would point at those named fiddles.  Named fiddles have urls
in the form:

    https://fiddle.skia.org/c/@Bitmap_000

Then we would stick a link to the example into the header documentation
like this:

    /** Allocates the pixel memory for the bitmap, given its dimensions
        and SkColorType. Returns true on success, where success means
        either setPixels() or setPixelRef() was called.

        @param bitmap  SkBitmap containing SkImageInfo as input, and
                       SkPixelRef as output
        @return        true if SkPixelRef was allocated

        @example       https://fiddle.skia.org/c/@Bitmap_000
    */
    bool allocPixelRef(SkBitmap* bitmap) override;

There are still around 200 disabled examples that need to be fixed
(these result from API changes since the author left).

Change-Id: I14a31348a9ccaaa31f65424b91e3a3533d2583a7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/198824
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
diff --git a/docs/examples/Pixmap_035.cpp b/docs/examples/Pixmap_035.cpp
new file mode 100644
index 0000000..c026a29
--- /dev/null
+++ b/docs/examples/Pixmap_035.cpp
@@ -0,0 +1,22 @@
+// Copyright 2019 Google LLC.
+// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
+#include "fiddle/examples.h"
+// HASH=6da54774f6432b46b47ea9013c15f280
+REG_FIDDLE(Pixmap_035, 256, 64, false, 0) {
+void draw(SkCanvas* canvas) {
+    uint16_t storage[][5] = {{ 0xCABF, 0xDABE, 0xCA9D, 0xC96C, 0xA39B },
+                             { 0xACEE, 0xA87C, 0x893A, 0x4779, 0x8708 },
+                             { 0x4B7C, 0x255B, 0x2559, 0x2557, 0x4656 },
+                             { 0x9099, 0x8128, 0x2557, 0x4124, 0x3323 },
+                             { 0x7547, 0x5505, 0x4434, 0x2012, 0x0000 }};
+    SkImageInfo imageInfo = SkImageInfo::Make(5, 5, kARGB_4444_SkColorType, kPremul_SkAlphaType);
+    SkPixmap pixmap(imageInfo, storage[0], sizeof(storage) / 5);
+    SkBitmap bitmap;
+    bitmap.installPixels(pixmap);
+    canvas->scale(10, 10);
+    canvas->drawBitmap(bitmap, 0, 0);
+    *pixmap.writable_addr16(2, 2) = 0x000F;
+    bitmap.installPixels(pixmap);
+    canvas->drawBitmap(bitmap, 10, 0);
+}
+}  // END FIDDLE