preprocessor: Miscellaneous cleanups

- Use full header paths in includes
- Use ASSERT instead of assert
- Use angle::NonCopyable instead of PP_DISALLOW_COPY_AND_ASSIGN
- Use range-for in a couple places
- Remove pp_utils.h

BUG=angleproject:1522

Change-Id: If107fef89e8465bca65cf664926d1051c5d1e232
Reviewed-on: https://chromium-review.googlesource.com/387212
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/renderer/gl/ProgramGL.cpp b/src/libANGLE/renderer/gl/ProgramGL.cpp
index 2c2c4e7..e6ec589 100644
--- a/src/libANGLE/renderer/gl/ProgramGL.cpp
+++ b/src/libANGLE/renderer/gl/ProgramGL.cpp
@@ -577,7 +577,7 @@
             for (GLint arrayIndex = 1; arrayIndex < arraySize; ++arrayIndex)
             {
                 PathRenderingFragmentInput arrayElementInput;
-                arrayElementInput.name     = name + "[" + std::to_string(arrayIndex) + "]";
+                arrayElementInput.name     = name + "[" + ToString(arrayIndex) + "]";
                 arrayElementInput.location = baseLocation + arrayIndex;
                 mPathRenderingFragmentInputs.push_back(std::move(arrayElementInput));
             }