AK: Add a forward declaration header

You can now #include <AK/Forward.h> to get most of the AK types as
forward declarations.

Header dependency explosion is one of the main contributors to compile
times at the moment, so this is a step towards smaller include graphs.

Libraries/LibC/grp.cpp

@@ -25,6 +25,7 @@
  */
 
 #include <AK/String.h>
+#include <AK/Vector.h>
 #include <grp.h>
 #include <stdio.h>
 #include <stdlib.h>

Libraries/LibC/pwd.cpp

@@ -25,6 +25,7 @@
  */
 
 #include <AK/String.h>
+#include <AK/Vector.h>
 #include <pwd.h>
 #include <stdio.h>
 #include <stdlib.h>

Libraries/LibC/syslog.cpp

@@ -27,6 +27,7 @@
 // Has to be defined before including due to legacy Unices
 #define SYSLOG_NAMES 1
 
+#include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <stdio.h>
 #include <string.h>

Libraries/LibELF/ELFDynamicLoader.h

@@ -26,14 +26,14 @@
 
 #pragma once
 
-#include <LibELF/ELFDynamicObject.h>
-#include <LibELF/ELFImage.h>
-#include <LibELF/exec_elf.h>
-#include <mman.h>
-
+#include <AK/Assertions.h>
 #include <AK/OwnPtr.h>
 #include <AK/RefCounted.h>
 #include <AK/String.h>
+#include <LibELF/ELFDynamicObject.h>
+#include <LibELF/ELFImage.h>
+#include <LibELF/exec_elf.h>
+#include <sys/mman.h>
 
 #define ALIGN_ROUND_UP(x, align) ((((size_t)(x)) + align - 1) & (~(align - 1)))
 

Libraries/LibELF/ELFDynamicObject.cpp

@@ -24,12 +24,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/String.h>
+#include <AK/StringBuilder.h>
 #include <LibELF/ELFDynamicObject.h>
 #include <LibELF/exec_elf.h>
-
-#include <AK/StringBuilder.h>
-
-#include <assert.h>
 #include <stdio.h>
 
 static const char* name_for_dtag(Elf32_Sword d_tag);

Libraries/LibELF/ELFDynamicObject.h

@@ -26,6 +26,7 @@
 
 #pragma once
 
+#include <AK/Assertions.h>
 #include <LibBareMetal/Memory/VirtualAddress.h>
 #include <LibELF/exec_elf.h>
 

Libraries/LibGUI/ProgressBar.cpp

@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/Assertions.h>
 #include <AK/StringBuilder.h>
 #include <LibGUI/Painter.h>
 #include <LibGUI/ProgressBar.h>

Libraries/LibGUI/ScrollBar.cpp

@@ -24,12 +24,14 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <LibGfx/CharacterBitmap.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/Palette.h>
-#include <LibGfx/StylePainter.h>
+#include <AK/Assertions.h>
+#include <AK/StdLibExtras.h>
 #include <LibGUI/Painter.h>
 #include <LibGUI/ScrollBar.h>
+#include <LibGfx/Bitmap.h>
+#include <LibGfx/CharacterBitmap.h>
+#include <LibGfx/Palette.h>
+#include <LibGfx/StylePainter.h>
 
 namespace GUI {
 

Libraries/LibGUI/Shortcut.cpp

@@ -25,6 +25,7 @@
  */
 
 #include <AK/StringBuilder.h>
+#include <AK/Vector.h>
 #include <LibGUI/Shortcut.h>
 
 namespace GUI {

Libraries/LibGfx/PNGLoader.cpp

@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/FileSystemPath.h>
 #include <AK/MappedFile.h>
 #include <AK/NetworkOrdered.h>

Libraries/LibGfx/Painter.h

@@ -26,12 +26,13 @@
 
 #pragma once
 
-#include "Color.h"
-#include "Point.h"
-#include "Rect.h"
-#include "Size.h"
 #include <AK/String.h>
 #include <AK/Utf8View.h>
+#include <AK/Vector.h>
+#include <LibGfx/Color.h>
+#include <LibGfx/Point.h>
+#include <LibGfx/Rect.h>
+#include <LibGfx/Size.h>
 #include <LibGfx/TextAlignment.h>
 #include <LibGfx/TextElision.h>
 

Libraries/LibGfx/Rect.cpp

@@ -24,8 +24,9 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "Rect.h"
 #include <AK/StdLibExtras.h>
+#include <AK/Vector.h>
+#include <LibGfx/Rect.h>
 
 namespace Gfx {
 

Libraries/LibHTML/CSS/StyleDeclaration.h

@@ -27,6 +27,7 @@
 #pragma once
 
 #include <AK/String.h>
+#include <AK/Vector.h>
 #include <LibHTML/CSS/StyleValue.h>
 
 struct StyleProperty {

Libraries/LibHTML/CSS/StyleValue.cpp

@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/PNGLoader.h>
 #include <LibHTML/CSS/StyleValue.h>

Libraries/LibHTML/DOM/HTMLImageElement.h

@@ -26,6 +26,7 @@
 
 #pragma once
 
+#include <AK/ByteBuffer.h>
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/ImageDecoder.h>
 #include <LibHTML/DOM/HTMLElement.h>

Libraries/LibIPC/Message.h

@@ -26,7 +26,7 @@
 
 #pragma once
 
-#include <AK/String.h>
+#include <AK/Vector.h>
 
 namespace IPC {
 

Libraries/LibMarkdown/MDBlock.h

@@ -26,7 +26,7 @@
 
 #pragma once
 
-#include <AK/String.h>
+#include <AK/Vector.h>
 
 class MDBlock {
 public: