Revert "Add stats to distinguish android renderer crashes."

Revert "Add stats to distinguish android renderer crashes."

This reverts commit 587e705898fd262f83acd78eef13f5858f73c4e2
(crrev.com/1447213002)

Reason for the revert:
broke all Android perf bots. More context in crbug.com/560813.
This CL is causing a null pointer deref in the browser whenever
a renderer kill is detected:

Thread 0 (crashed)
 0  libchrome_public.so!breakpad::CrashDumpManager::Observe [crash_dump_manager_android.cc : 194 + 0x0]

    Found by: given as instruction pointer in context
 1  libchrome_public.so!content::NotificationServiceImpl::Notify [notification_service_impl.cc : 123 + 0xd]

    Found by: call frame info
 2  libchrome_public.so!content::RenderProcessHostImpl::Cleanup [render_process_host_impl.cc : 1790 + 0x1]

    Found by: call frame info
 3  libchrome_public.so!content::RenderWidgetHostImpl::~RenderWidgetHostImpl [render_widget_host_impl.cc : 257 + 0x9]

    Found by: call frame info
 4  libchrome_public.so!content::RenderViewHostImpl::~RenderViewHostImpl [render_view_host_impl.cc : 266 + 0x5]

    Found by: call frame info
 5  libchrome_public.so!content::RenderViewHostImpl::~RenderViewHostImpl [render_view_host_impl.cc : 277 + 0x3]

    Found by: call frame info
 6  libchrome_public.so!content::RenderWidgetHostImpl::Destroy [render_widget_host_impl.cc : 1465 + 0x7]

    Found by: call frame info

BUG=560813, 510327
NOTRY=TRUE
TBR=skyostil@chromium.org,yfriedman@chromium.org,wnwen@chromium.org

Committed: https://crrev.com/7226c82f48f15c1bc5a5269ed11feff45a810df4
Cr-Commit-Position: refs/heads/master@{#361347}

[Primiano Tucci (use gerrit), 2015-11-24 15:54:09]

The CQ bit was checked by primiano@chromium.org

[commit-bot: I haz the power, 2015-11-24 15:54:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1474543003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1474543003/1

[commit-bot: I haz the power, 2015-11-24 16:01:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-24 16:02:40]

Patchset 1 (id:??) landed as
https://crrev.com/7226c82f48f15c1bc5a5269ed11feff45a810df4
Cr-Commit-Position: refs/heads/master@{#361347}