[Fuchsia] Switch to use 'core' SDK in Chromium.

Bug: 910670
Change-Id: Ieac8ffe1ebaf49c4faad10fc83791d384231ac32
Reviewed-on: https://chromium-review.googlesource.com/c/1372910
Commit-Queue: Wez <wez@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615957}

build/fuchsia/linux.sdk.sha1

-a227b06661c0633bfb9955e996b07dc5b8aa2cea
+7adc6567256ad2ab0fd5744e2a7665a98d858650
\ No newline at end of file

build/fuchsia/mac.sdk.sha1

-9ec225bad1f63059a9c4e0abb6fa9bea3c78207e
+0e19de1bd8916d8fd5bda11eb49581773dccae14
\ No newline at end of file

build/fuchsia/update_sdk.py

@@ -29,7 +29,7 @@ def GetSdkHashForPlatform():
   return os.path.join(os.path.dirname(__file__), filename)
 
 def GetBucketForPlatform():
-  return 'gs://fuchsia/sdk/{platform}-amd64/'.format(
+  return 'gs://fuchsia/sdk/core/{platform}-amd64/'.format(
       platform = GetHostOsFromPlatform())