Add verbose logging to linker flags in offial builds.

build/internal/release_impl_official.gypi

Index: build/internal/release_impl_official.gypi
diff --git a/build/internal/release_impl_official.gypi b/build/internal/release_impl_official.gypi
index dd899c2ca435e02a8718782c46cccf4a315a0496..ee9df43c90538070852ae363ce5a2533c2a4cd7a 100644
--- a/build/internal/release_impl_official.gypi
+++ b/build/internal/release_impl_official.gypi
@@ -15,6 +15,10 @@
       'AdditionalOptions': ['/ltcg', '/expectedoutputsize:120000000'],
     },
     'VCLinkerTool': {
+      # Get more debug spew from the linker while we're sorting out
+      # build problems and performance.
+      # TODO(siggi): Remove these flags after we're out of the woods.
+      'AdditionalOptions': ['/verbose', '/time'],
       'LinkTimeCodeGeneration': '1',
       # The /PROFILE flag causes the linker to add a "FIXUP" debug stream to
       # the generated PDB. According to MSDN documentation, this flag is only