core build: Remove unnecessary include_dirs (bindings cruft)

The core:core_generated target previously needed many include_dirs in
its path, due to unqualified include statements.
These have been resolved, and now we can remove them!

R=haraken
BUG=377364

Review URL: https://codereview.chromium.org/340473002

git-svn-id: svn://svn.chromium.org/blink/trunk@176294 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/bindings/v8/custom/custom.gypi

@@ -4,7 +4,6 @@
 
 {
     'variables': {
-        'bindings_v8_custom_dir': '.',
         'bindings_v8_custom_files': [
             'V8ArrayBufferCustom.cpp',
             'V8ArrayBufferCustom.h',

third_party/WebKit/Source/core/BUILD.gn

@@ -428,13 +428,6 @@ source_set("core_generated") {
   configs += [ ":core_include_dirs" ]
   include_dirs = [
     "$root_gen_dir/blink",
-    # FIXME: Remove these once the bindings script generates qualified
-    # includes for these correctly. (Sequences don"t work yet.)
-    bindings_v8_custom_dir,
-    "html",
-    "html/shadow",
-    "inspector",
-    "svg",
   ]
 
   cflags = []

third_party/WebKit/Source/core/core.gyp

@@ -251,15 +251,6 @@
       ],
       'include_dirs': [
         '<@(webcore_include_dirs)',
-
-        # FIXME: Remove these once the bindings script generates qualified
-        # includes for these correctly. (Sequences don't work yet.)
-        # http://crbug.com/377364
-        '<(bindings_v8_custom_dir)',
-        'html',
-        'html/shadow',
-        'inspector',
-        'svg',
       ],
       'sources': [
         # FIXME: should be bindings_core_v8_files http://crbug.com/358074