gn: Fix build issues blocking gfx from being built

BUG=354261
R=brettw@chromium.org, brettw

Review URL: https://codereview.chromium.org/589753005

Cr-Original-Commit-Position: refs/heads/master@{#296027}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: b83a0bd983bdcdcbc14559f263e7e7d8145c976c

config/BUILDCONFIG.gn

@@ -433,7 +433,7 @@ set_defaults("shared_library") {
 }
 if (is_component_build) {
   set_defaults("component") {
-    configs = _native_compiler_configs
+    configs = _shared_library_configs
   }
 }
 

toolchain/win/BUILD.gn

@@ -111,6 +111,8 @@ template("msvc_toolchain") {
         dllname,
         libname,
       ]
+      link_output = libname
+      depend_output = libname
       # The use of inputs_newline is to work around a fixed per-line buffer
       # size in the linker.
       rspfile_content = "{{libs}} {{solibs}} {{inputs_newline}} {{ldflags}}"