[TimeZoneMonitor] Decouple renderer side impl from content to blink.

third_party/WebKit/Source/platform/heap/RunAllTests.cpp

Index: third_party/WebKit/Source/platform/heap/RunAllTests.cpp
diff --git a/third_party/WebKit/Source/platform/heap/RunAllTests.cpp b/third_party/WebKit/Source/platform/heap/RunAllTests.cpp
index bd6c94d5012cb8fdf7a53dd011b73655156e1692..15dd8faf7cd4c250c9d6f66e5070e9138f31e4c7 100644
--- a/third_party/WebKit/Source/platform/heap/RunAllTests.cpp
+++ b/third_party/WebKit/Source/platform/heap/RunAllTests.cpp
@@ -34,6 +34,7 @@
 #include <base/test/test_suite.h>
 #include <base/time/time.h>
 #include <content/test/blink_test_environment.h>
+#include <mojo/edk/embedder/embedder.h>
 #include <string.h>
 
 class BlinkTestEnvironmentScope {
@@ -43,6 +44,7 @@ class BlinkTestEnvironmentScope {
 };
 
 int runHelper(base::TestSuite* testSuite) {
+  mojo::edk::Init();

[haraken, 2016/10/27 16:13:15]

Do we need this? I don't think platform/heap/*tests are using Mojo.

If we need to add this here, I guess you also need to add it to other
RunAllTests.cpp.

[leonhsl(Using Gerrit), 2016/10/28 05:59:06]

At line42 in this one RunAllTests.cpp, it is calling
content::SetUpBlinkTestEnvironment(), which will create a message loop and then
call blink::initialize(), which will initialize the mojo
stuff(TimeZoneMonitorClient), this means mojo edk MUST be ready before that.
For other 2 RunAllTests.cpp hitting such case, they've already had the mojo edk
init path. They're:
third_party/WebKit/Source/platform/testing/BlinkFuzzerTestSupport.cpp and
third_party/WebKit/Source/web/tests/RunAllTests.cpp. 
Further more, because https://codereview.chromium.org/2453933003 has been
landed, mojo edk init path has been centralized, this CL does not need to add
mojo::edk::Init() here. Reverted these changes for blink heap unit tests by
ps#20.

   BlinkTestEnvironmentScope blinkTestEnvironment;
   blink::ThreadState* currentThreadState = blink::ThreadState::current();
   currentThreadState->registerTraceDOMWrappers(nullptr, nullptr, nullptr,