Roll src-internal from 39ca1963aa25 to 15c630fcaa35 (10 revisions)

https://chrome-internal.googlesource.com/chrome/src-internal.git/+log/39ca1963aa25..15c630fcaa35

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://skia-autoroll.corp.goog/r/src-internal-chromium-autoroll
Please CC harringtond@google.com,gab@google.com on the revert to ensure that a human
is aware of the problem.

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Documentation for the AutoRoller is here:
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Cq-Include-Trybots: luci.chrome.try:linux-chromeos-chrome
Bug: chromium:1150968,chromium:1151505,chromium:1164189,chromium:1166926
Tbr: harringtond@google.com,gab@google.com
Change-Id: I3959a8e5e8f1ee21da9e0422059678dfd52132e0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2640706Reviewed-by: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Reviewed-by: Dan H <harringtond@chromium.org>
Commit-Queue: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#845366}

DEPS

@@ -1587,7 +1587,7 @@ deps = {
     Var('chromium_git') + '/v8/v8.git' + '@' +  Var('v8_revision'),
 
   'src-internal': {
-    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@39ca1963aa2567053268f01ed6049cdab66aa017',
+    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@15c630fcaa35bedd8747592131f607716fb19a1d',
     'condition': 'checkout_src_internal',
   },