GitLab

This change moves the code to emit histogram
"Windows.ChromeDllPrefetchResult" histogram into ChromeMain(). This
fixes an issue where the histogram was created in chrome.exe and
thus failed to be emitted by chrome.dll on non-components builds.

Currently, the histogram is created before chrome.dll is entered, in
chrome.exe. On non-component (release) builds, chrome.exe and
chrome.dll each have separate copies of base, because base is
statically linked ('baked in') into each portable executable file.
Creating the histogram in chrome.exe's base means that chrome.dll's
base, the one that actually emits the histograms to UMA, does not see
the histogram.

This change addresses this by passing the histogram value into
ChromeMain() and emitting the histogram there.

Bug: 1096609
Change-Id: I918144dff4fc0d5189d5882462ffadd88f27b9b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2280242
Commit-Queue: Jesse McKenna <jessemckenna@google.com>
Reviewed-by: Greg Thompson <grt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#786465}