Move SkUtils.h to src/core.

src/views/win/SkOSWindow_win.cpp

Index: src/views/win/SkOSWindow_win.cpp
diff --git a/src/views/win/SkOSWindow_win.cpp b/src/views/win/SkOSWindow_win.cpp
index 4b7abb1e96686cbb510b7282c7b83eccdbb65cc7..c451708cef0c4a80bf3306cecfc304f763c72fe3 100644
--- a/src/views/win/SkOSWindow_win.cpp
+++ b/src/views/win/SkOSWindow_win.cpp
@@ -147,7 +147,8 @@ bool SkOSWindow::wndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
             this->handleChar((SkUnichar) wParam);
             return true;
         case WM_CHAR: {
-            this->handleChar(SkUTF8_ToUnichar((char*)&wParam));
+            const uint16_t* c = reinterpret_cast<uint16_t*>(&wParam);
+            this->handleChar(SkUTF16_NextUnichar(&c));
             return true;
         } break;
         case WM_SIZE: {