[Android WebView] Update microdump generation for sandboxed renderers

Now microdump handling has three modes depending on the process type:

"webview"    -- displays crash dialog, supports dump on demand;
"" (browser) -- displays crash dialog, doesn't support dump on demand;
"renderer"   -- doesn't display crash dialog, no dump on demand.

Dump on demand may be enabled later if we figure out how to do it
properly for sandboxed renderers.

Exported `InitMicrodumpCrashHandlerIfNecessary` as calling
`InitNonBrowserCrashReporterForAndroid` for that purpose is misleading,
and WebView doesn't need any of the functionality that it can enable.

BUG=568825

Review URL: https://codereview.chromium.org/1518913002

Cr-Commit-Position: refs/heads/master@{#364766}

2 files changed, 3 insertions, 4 deletions

diff --git a/android_webview/crash_reporter/aw_microdump_crash_reporter.cc b/android_webview/crash_reporter/aw_microdump_crash_reporter.cc
index 165c4b3..aac36e8 100644
--- a/android_webview/crash_reporter/aw_microdump_crash_reporter.cc
+++ b/android_webview/crash_reporter/aw_microdump_crash_reporter.cc
@@ -109,7 +109,7 @@ bool SafeToUseSignalHandler() {
 
 }  // namespace
 
-void EnableMicrodumpCrashReporter() {
+void EnableMicrodumpCrashReporter(const std::string& process_type) {
   if (g_enabled) {
     NOTREACHED() << "EnableMicrodumpCrashReporter called more than once";
     return;
@@ -124,8 +124,7 @@ void EnableMicrodumpCrashReporter() {
 
   ::crash_reporter::SetCrashReporterClient(g_crash_reporter_client.Pointer());
 
-  // |process_type| is not really relevant here, as long as it not empty.
-  breakpad::InitNonBrowserCrashReporterForAndroid("webview" /* process_type */);
+  breakpad::InitMicrodumpCrashHandlerIfNecessary(process_type);
   g_enabled = true;
 }
 
diff --git a/android_webview/crash_reporter/aw_microdump_crash_reporter.h b/android_webview/crash_reporter/aw_microdump_crash_reporter.h
index 067363f..ae567a8 100644
--- a/android_webview/crash_reporter/aw_microdump_crash_reporter.h
+++ b/android_webview/crash_reporter/aw_microdump_crash_reporter.h
@@ -10,7 +10,7 @@
 namespace android_webview {
 namespace crash_reporter {
 
-void EnableMicrodumpCrashReporter();
+void EnableMicrodumpCrashReporter(const std::string& process_type);
 void AddGpuFingerprintToMicrodumpCrashHandler(
     const std::string& gpu_fingerprint);
 bool DumpWithoutCrashingToFd(int fd);