[M116] [aw] Disable WebViewReportFrameMetrics by default

Unfortunately, the fix in https://crrev.com/c/4621849 doesn't seem to
address all crashes, so this CL disables WebViewReportFrameMetrics
by default.

(cherry picked from commit d5f3aa6)

Bug: 1454809, b:278118627
Change-Id: If8ca18063f797c537e175c39e6161668f523df94
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4629171
Reviewed-by: Richard Coles <torne@chromium.org>
Commit-Queue: Oksana Zhuravlova <oksamyt@chromium.org>
Cr-Original-Commit-Position: refs/heads/main@{#1160654}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4661703
Reviewed-by: Erhu Akpobaro <eakpobaro@google.com>
Owners-Override: Erhu Akpobaro <eakpobaro@google.com>
Cr-Commit-Position: refs/branch-heads/5845@{#341}
Cr-Branched-From: 5a5dff6-refs/heads/main@{#1160321}

android_webview/common/aw_features.cc

@@ -109,7 +109,7 @@ BASE_FEATURE(kWebViewRecordAppDataDirectorySize,
 // Android.Jank.FrameJankStatus histograms.
 BASE_FEATURE(kWebViewReportFrameMetrics,
              "WebViewReportFrameMetrics",
-             base::FEATURE_ENABLED_BY_DEFAULT);
+             base::FEATURE_DISABLED_BY_DEFAULT);
 
 // Flag to restrict main frame Web Content to verified web content. Verification
 // happens via Digital Asset Links.