Change relative includes to be absolute

Having all includes to skia source will make generating
BAZEL rules easier.

Change-Id: I318dfc88e736a62da151098bebbee8d7b357d963
Bug: skia:12541
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/474736
Reviewed-by: Ben Wagner <bungeman@google.com>

gm/pathmeasure.cpp

@@ -13,7 +13,7 @@
 #include "include/effects/SkDashPathEffect.h"
 
 // Repro case for skia:7674.  Requires lots of RAM to run, and currently triggers UB:
-// ../include/private/SkTDArray.h:382:26:
+// //include/private/SkTDArray.h:382:26:
 //   runtime error: signed integer overflow: 2147483644 + 4 cannot be represented in type 'int'
 
 static SK_UNUSED void path_measure_explosion(SkCanvas* canvas) {

src/gpu/gl/android/GrGLMakeNativeInterface_android.cpp

@@ -4,5 +4,5 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
-#include "../egl/GrGLMakeEGLInterface.cpp"
-#include "../egl/GrGLMakeNativeInterface_egl.cpp"
+#include "src/gpu/gl/egl/GrGLMakeEGLInterface.cpp"
+#include "src/gpu/gl/egl/GrGLMakeNativeInterface_egl.cpp"

tools/fiddle/make_all_examples_cpp.py

@@ -12,4 +12,6 @@ with open('all_examples.cpp', 'w') as o:
             'governed by a BSD-style license that can be found in the '
             'LICENSE file.\n')
     for path in sorted(glob.glob('../../docs/examples/*.cpp')):
+        # strip ../../
+        path = path[6:]
         o.write('#include "%s"\n' % path)