[includes] Enforce IWYU on //example

Change-Id: I26136f1a3960eafd6e48c733c16ca35d20534df6
Bug: skia:13052
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/535395
Reviewed-by: Ben Wagner <bungeman@google.com>

bazel/cc_binary_with_flags.bzl

@@ -133,6 +133,9 @@ def cc_binary_with_flags(name, set_flags = {}, **kwargs):
         set_flags = set_flags,
         testonly = kwargs.get("testonly", False),
     )
+    tags = kwargs.get("tags", [])
+    tags.append("manual")  # We want to exclude this helper binary from bazel build foo/...
+    kwargs["tags"] = tags
     native.cc_binary(
         name = cc_binary_name,
         **kwargs

example/BUILD.bazel

@@ -1,8 +1,10 @@
-load("//bazel:macros.bzl", "generated_cc_atom")
+load("//bazel:macros.bzl", "enforce_iwyu_on_package", "generated_cc_atom")
 load("//bazel:cc_binary_with_flags.bzl", "cc_binary_with_flags")
 
 licenses(["notice"])
 
+enforce_iwyu_on_package()
+
 cc_binary_with_flags(
     name = "hello_world_gl",
     srcs = [
@@ -102,8 +104,11 @@ generated_cc_atom(
     hdrs = ["HelloWorld.h"],
     visibility = ["//:__subpackages__"],
     deps = [
+        "//include/core:SkScalar_hdr",
+        "//include/core:SkTypes_hdr",
         "//tools/sk_app:Application_hdr",
         "//tools/sk_app:Window_hdr",
+        "//tools/skui:ModifierKey_hdr",
     ],
 )
 
@@ -114,10 +119,19 @@ generated_cc_atom(
     deps = [
         ":HelloWorld_hdr",
         "//include/core:SkCanvas_hdr",
+        "//include/core:SkColor_hdr",
+        "//include/core:SkFontTypes_hdr",
         "//include/core:SkFont_hdr",
         "//include/core:SkGraphics_hdr",
+        "//include/core:SkPaint_hdr",
+        "//include/core:SkPoint_hdr",
+        "//include/core:SkRect_hdr",
+        "//include/core:SkShader_hdr",
+        "//include/core:SkString_hdr",
         "//include/core:SkSurface_hdr",
+        "//include/core:SkTileMode_hdr",
         "//include/effects:SkGradientShader_hdr",
+        "//tools/sk_app:DisplayParams_hdr",
     ],
 )
 
@@ -126,8 +140,14 @@ generated_cc_atom(
     srcs = ["VulkanBasic.cpp"],
     visibility = ["//:__subpackages__"],
     deps = [
+        "//include/core:SkAlphaType_hdr",
         "//include/core:SkCanvas_hdr",
+        "//include/core:SkColorType_hdr",
+        "//include/core:SkColor_hdr",
+        "//include/core:SkImageInfo_hdr",
+        "//include/core:SkRefCnt_hdr",
         "//include/core:SkSurface_hdr",
+        "//include/core:SkTypes_hdr",
         "//include/gpu:GrDirectContext_hdr",
         "//include/gpu/vk:GrVkBackendContext_hdr",
         "//include/gpu/vk:GrVkExtensions_hdr",

example/HelloWorld.cpp

@@ -8,10 +8,21 @@
 #include "example/HelloWorld.h"
 
 #include "include/core/SkCanvas.h"
+#include "include/core/SkColor.h"
 #include "include/core/SkFont.h"
+#include "include/core/SkFontTypes.h"
 #include "include/core/SkGraphics.h"
+#include "include/core/SkPaint.h"
+#include "include/core/SkPoint.h"
+#include "include/core/SkRect.h"
+#include "include/core/SkShader.h"
+#include "include/core/SkString.h"
 #include "include/core/SkSurface.h"
+#include "include/core/SkTileMode.h"
 #include "include/effects/SkGradientShader.h"
+#include "tools/sk_app/DisplayParams.h"
+
+#include <string.h>
 
 using namespace sk_app;
 

example/HelloWorld.h

@@ -8,10 +8,13 @@
 #ifndef HelloWorld_DEFINED
 #define HelloWorld_DEFINED
 
+#include "include/core/SkScalar.h"
+#include "include/core/SkTypes.h"
 #include "tools/sk_app/Application.h"
 #include "tools/sk_app/Window.h"
+#include "tools/skui/ModifierKey.h"
 
-class SkCanvas;
+class SkSurface;
 
 class HelloWorld : public sk_app::Application, sk_app::Window::Layer {
 public:

example/VulkanBasic.cpp

@@ -5,16 +5,22 @@
  * found in the LICENSE file.
  */
 
+#include "include/core/SkAlphaType.h"
 #include "include/core/SkCanvas.h"
+#include "include/core/SkColor.h"
+#include "include/core/SkColorType.h"
+#include "include/core/SkImageInfo.h"
+#include "include/core/SkRefCnt.h"
 #include "include/core/SkSurface.h"
+#include "include/core/SkTypes.h"
 #include "include/gpu/GrDirectContext.h"
 #include "include/gpu/vk/GrVkBackendContext.h"
 #include "include/gpu/vk/GrVkExtensions.h"
-
 #include "tools/gpu/vk/VkTestUtils.h"
 
+#include <string.h>
 #include <vulkan/vulkan_core.h>
-
+#include <functional>
 #include <memory>
 
 #define ACQUIRE_INST_VK_PROC(name)                                                           \