webview: adds weblayer-web-view-compat-mode to whitelist of crash keys

Without this, the value isn't reported.

BUG=none
TEST=none

Change-Id: I4e02d0cfc5aa0a9156a44884e6ea37682aee9cce
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2161583
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#761904}

android_webview/browser/aw_browser_context.cc

@@ -22,6 +22,7 @@
 #include "android_webview/browser/safe_browsing/aw_safe_browsing_whitelist_manager.h"
 #include "android_webview/browser_jni_headers/AwBrowserContext_jni.h"
 #include "android_webview/common/aw_features.h"
+#include "android_webview/common/crash_reporter/crash_keys.h"
 #include "base/base_paths_posix.h"
 #include "base/bind.h"
 #include "base/feature_list.h"
@@ -73,7 +74,7 @@ const void* const kDownloadManagerDelegateKey = &kDownloadManagerDelegateKey;
 AwBrowserContext* g_browser_context = NULL;
 
 crash_reporter::CrashKeyString<1> g_web_view_compat_crash_key(
-    "WEBLAYER_WEB_VIEW_COMPAT_MODE");
+    crash_keys::kWeblayerWebViewCompatMode);
 
 // Empty method to skip origin security check as DownloadManager will set its
 // own method.

android_webview/common/crash_reporter/crash_keys.cc

@@ -17,6 +17,9 @@ const char kAndroidSdkInt[] = "android-sdk-int";
 
 const char kSupportLibraryWebkitVersion[] = "androidx-webkit-version";
 
+extern const char kWeblayerWebViewCompatMode[] =
+    "WEBLAYER_WEB_VIEW_COMPAT_MODE";
+
 // clang-format off
 const char* const kWebViewCrashKeyWhiteList[] = {
     "AW_WHITELISTED_DEBUG_KEY",
@@ -69,6 +72,9 @@ const char* const kWebViewCrashKeyWhiteList[] = {
     "variations__7",
     "variations__8",
     "num-experiments",
+
+    kWeblayerWebViewCompatMode,
+
     nullptr};
 // clang-format on
 

android_webview/common/crash_reporter/crash_keys.h

@@ -24,6 +24,11 @@ extern const char kAndroidSdkInt[];
 
 extern const char kSupportLibraryWebkitVersion[];
 
+// Indicates whether weblayer and webview are running in the same process.
+// When this is true, crashes may be reported to both WebLayer and WebView,
+// regardless of whetere the crash happened.
+extern const char kWeblayerWebViewCompatMode[];
+
 }  // namespace crash_keys
 }  // namespace android_webview