win: Set LargeAddressAware on symupload

This was set manually on Chrome's built binary before
https://codereview.chromium.org/2173533002 but wasn't added to the build
file.

After this change:

c:\src\breakpad\src\src>dumpbin /headers tools\windows\symupload\Release\symupload.exe | grep large
                   Application can handle large (>2GB) addresses

This change only affects x86 builds.

R=mark@chromium.org
BUG=chromium:696911

Change-Id: I8f1bd5535af242edde51e70c60cf33b6170855ea
Reviewed-on: https://chromium-review.googlesource.com/447780
Reviewed-by: Mark Mentovai <mark@chromium.org>

src/tools/windows/symupload/symupload.gyp

@@ -40,6 +40,11 @@
       'dependencies': [
         '../../../common/windows/common_windows.gyp:common_windows_lib',
       ],
+      'msvs_settings': {
+        'VCLinkerTool': {
+          'LargeAddressAware': '2',
+        },
+      },
     },
   ],
 }