[android-webview] Enable breakpad microdump crash reporting

[android-webview] Enable breakpad microdump crash reporting

This CL:
 - Pulls in the dependencies required to build breakpad and the
   crash component.
 - Introduces a crash reporter for WebView which unconditionally
   enables microdumps (but not minidump uploads).
 - Introduces a fallback no-op implementation which avoids the burden
   of importing and supporting breakpad in the internal Android builds
   (which are going to be deprecated soon).

Impact of this change on the WebView APK size:
  Before the change: 25700337 bytes
  After the change:  25720974 bytes
  Delta:                20637 bytes

Impact of this change on the uncompressed libwebviewchromium.so lib:
  Before the change: 28547980 bytes
  After the change:  28576844 bytes
  Delta:                28864 bytes

BUG=410294, 456494
TBR=mark@chromium.org

Committed: https://crrev.com/2d3f4b2a13d7a9cf0dc2a3cffed9b29f441858eb
Cr-Commit-Position: refs/heads/master@{#315357}

[Primiano Tucci (use gerrit), 2015-02-07 14:49:27]

Patchset #1 (id:1) has been deleted

[Primiano Tucci (use gerrit), 2015-02-07 14:50:53]

Patchset #1 (id:20001) has been deleted

[Primiano Tucci (use gerrit), 2015-02-07 14:55:19]

primiano@chromium.org changed reviewers:
+ torne@chromium.org

[Primiano Tucci (use gerrit), 2015-02-07 14:55:20]

PTAL.

This might need some offline discussion. Not sure whether the
noop-on-android-build strategy is acceptable, but it makes it so that this CL
will just work on upstream builds and will just-not-break downstream.

Note: this depends on crrev.com/904213002

[Primiano Tucci (use gerrit), 2015-02-07 16:37:06]

Patchset #2 (id:60001) has been deleted

[Torne, 2015-02-09 10:14:22]

LGTM - if we need to enable it downstream we can do that later.

[Primiano Tucci (use gerrit), 2015-02-09 17:31:42]

The CQ bit was checked by primiano@chromium.org

[commit-bot: I haz the power, 2015-02-09 17:32:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/902093003/80001

[Primiano Tucci (use gerrit), 2015-02-09 17:36:42]

TBR-ing mark@ for adding the dependency to crash/ in android_webview

[Primiano Tucci (use gerrit), 2015-02-09 17:37:12]

primiano@chromium.org changed reviewers:
+ mark@chromium.org

[Primiano Tucci (use gerrit), 2015-02-09 17:37:13]

TBR-ing mark@ for adding the dependency to crash/ in android_webview

[commit-bot: I haz the power, 2015-02-09 18:10:02]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-02-09 18:10:03]

Try jobs failed on following builders:
  android_aosp on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_aosp/bu...)

[Primiano Tucci (use gerrit), 2015-02-09 18:19:07]

New patchsets have been uploaded after l-g-t-m from torne@chromium.org

[Primiano Tucci (use gerrit), 2015-02-09 18:19:17]

The CQ bit was checked by primiano@chromium.org

[commit-bot: I haz the power, 2015-02-09 18:20:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/902093003/100001

[commit-bot: I haz the power, 2015-02-09 19:00:03]

Committed patchset #3 (id:100001)

[commit-bot: I haz the power, 2015-02-09 19:01:10]

Patchset 3 (id:??) landed as
https://crrev.com/2d3f4b2a13d7a9cf0dc2a3cffed9b29f441858eb
Cr-Commit-Position: refs/heads/master@{#315357}