Revert "Let GPU tests target Release browser on Win 64 as well"

This reverts commit 43a65748985cec5a289d207686ed6ba4164acedf.

Reason for revert:
https://crbug.com/1176363
https://ci.chromium.org/p/chromium-m89/builders/ci/Win10%20x64%20Release%20%28NVIDIA%29/546

Original change's description:
> Let GPU tests target Release browser on Win 64 as well
>
> Previously Release_x64 was needed due to different output directory name
> This was changed in
> https://chromium-review.googlesource.com/c/chromium/tools/build/+/2683941
>
> Bug: 1176363
> Change-Id: I06cdf216af45a64d50d8002c427b11ddb06cc57b
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2685501
> Reviewed-by: Dirk Pranke <[email protected]>
> Reviewed-by: Takuto Ikuta <[email protected]>
> Commit-Queue: Yuly Novikov <[email protected]>
> Cr-Commit-Position: refs/heads/master@{#852396}

[email protected],[email protected],[email protected],[email protected]

Change-Id: Ia93797ff9846590bb567e13e58b1432376ce7a6c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1176363
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2684002
Reviewed-by: Takuto Ikuta <[email protected]>
Commit-Queue: Takuto Ikuta <[email protected]>
Cr-Commit-Position: refs/heads/master@{#852413}
diff --git a/testing/buildbot/test_suite_exceptions.pyl b/testing/buildbot/test_suite_exceptions.pyl
index 02cb4ad..ccce99b 100644
--- a/testing/buildbot/test_suite_exceptions.pyl
+++ b/testing/buildbot/test_suite_exceptions.pyl
@@ -287,7 +287,7 @@
       'Win10 Tests x64': {
         'args': [
           '--target',
-          'Release',
+          'Release_x64',
         ],
         'swarming': {
           "shards": 28
@@ -297,7 +297,7 @@
         'args': [
           '--debug',
           '--target',
-          'Debug',
+          'Debug_x64',
         ],
       },
       'Win7 Tests (dbg)(1)': {
@@ -2076,7 +2076,7 @@
       },
       'Win10 Tests x64 (dbg)': {
         'args': [
-          '--browser=debug',
+          '--browser=debug_x64',
         ],
         'experiment_percentage': 100,
       },
@@ -2165,32 +2165,32 @@
     'modifications': {
       'Win10 FYI x64 Exp Release (Intel HD 630)': {
         'args': [
-          '--browser=release',
+          '--browser=release_x64',
         ],
       },
       'Win10 FYI x64 Exp Release (NVIDIA)': {
         'args': [
-          '--browser=release',
+          '--browser=release_x64',
         ],
       },
       'Win10 FYI x64 Release (AMD RX 5500 XT)': {
         'args': [
-          '--browser=release',
+          '--browser=release_x64',
         ],
       },
       'Win10 FYI x64 Release (Intel HD 630)': {
         'args': [
-          '--browser=release',
+          '--browser=release_x64',
         ],
       },
       'Win10 FYI x64 Release (NVIDIA)': {
         'args': [
-          '--browser=release',
+          '--browser=release_x64',
         ],
       },
       'Win10 x64 Release (NVIDIA)': {
         'args': [
-          '--browser=release',
+          '--browser=release_x64',
         ],
       },
     },