Do not compile frame_analyzer_host during Chromium builds.

Bug: webrtc:9665
Change-Id: I42ff7a02664c3552ea31972a84f1d7d18cab13ac
No-Try: True
Reviewed-on: https://webrtc-review.googlesource.com/100805
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Oleh Prypin <oprypin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24765}

rtc_tools/BUILD.gn

@@ -107,6 +107,7 @@ rtc_executable("frame_analyzer") {
   ]
 }
 
+if (!build_with_chromium && !build_with_mozilla) {
   action("frame_analyzer_host") {
     script = "//tools_webrtc/executable_host_build.py"
     outputs = [
@@ -117,6 +118,7 @@ action("frame_analyzer_host") {
       "frame_analyzer",
     ]
   }
+}
 
 # Only expose the targets needed by Chromium (e.g. frame_analyzer) to avoid
 # building a lot of redundant code as part of Chromium builds.