Revert of Per WebViewScheduler virtual time (patchset #32 id:660001 of https://codereview.chromium.org/1646583002/ )

Reason for revert:
Regression: Mac ASan 64 Tests (1)

Suspecting this cl for cause of Mac ASan regression, from list of Sheriff-o-matic suggested cls ( https://chromium.googlesource.com/chromium/src/+log/83534ab036f32a6aa7417e64fa3bc37a0b61be9d%5E..24820c067cb649a4eee2387eda8761e776a18d63?pretty=fuller ).

https://build.chromium.org/p/chromium.memory/builders/Mac%20ASan%2064%20Tests%20(1)

Build #12287 - https://build.chromium.org/p/chromium.memory/builders/Mac%20ASan%2064%20Tests%20%281%29/builds/12287

[ RUN      ] VirtualTimeTest.AllowVirtualTimeToAdvance
../../third_party/WebKit/Source/web/tests/VirtualTimeTest.cpp:103: Failure
Value of: ExecuteJavaScript("run_order.join(', ')")
  Actual: "c, b"
Expected: ""
Which is: 0x11200a6e0
[  FAILED  ] VirtualTimeTest.AllowVirtualTimeToAdvance (60 ms)
[2777/2778] VirtualTimeTest.AllowVirtualTimeToAdvance (60 ms)
[ RUN      ] All/ParameterizedWebFrameTest.DeviceScaleFactorUsesDefaultWithoutViewportTag/0
[       OK ] All/ParameterizedWebFrameTest.DeviceScaleFactorUsesDefaultWithoutViewportTag/0 (65 ms)
[2778/2778] All/ParameterizedWebFrameTest.DeviceScaleFactorUsesDefaultWithoutViewportTag/0 (65 ms)
Retrying 1 test (retry #2)
[ RUN      ] VirtualTimeTest.AllowVirtualTimeToAdvance
../../third_party/WebKit/Source/web/tests/VirtualTimeTest.cpp:103: Failure
Value of: ExecuteJavaScript("run_order.join(', ')")
  Actual: "c, b"
Expected: ""
Which is: 0x10d8e66e0
[  FAILED  ] VirtualTimeTest.AllowVirtualTimeToAdvance (62 ms)
[2779/2779] VirtualTimeTest.AllowVirtualTimeToAdvance (62 ms)
Retrying 1 test (retry #3)
[ RUN      ] VirtualTimeTest.AllowVirtualTimeToAdvance
../../third_party/WebKit/Source/web/tests/VirtualTimeTest.cpp:103: Failure
Value of: ExecuteJavaScript("run_order.join(', ')")
  Actual: "c, b"
Expected: ""
Which is: 0x1159e26e0
[  FAILED  ] VirtualTimeTest.AllowVirtualTimeToAdvance (61 ms)

Original issue's description:
> Per WebViewScheduler virtual time.
>
> This patch introduces a new per WebViewScheduler virtual time and
> wires it up into the BlinkTImers. NOTE there will be follow on
> patches where various other parts of blink will also use virtual time.
>
> For determinism some parts of blink will need to use the VirtualTime
> although new code should generally use the original non-virtual APIs.
>
> For more details see:
> https://docs.google.com/document/d/1y9KDT_ZEzT7pBeY6uzVt1dgKlwc1OB_vY4NZO1zBQmo/edit#
>
> BUG=546953
>
> Committed: https://crrev.com/0d2d2840ad6d7f149569eb42332c8c8083401234
> Cr-Commit-Position: refs/heads/master@{#377094}

TBR=esprehn@chromium.org,skyostil@chromium.org,alexclarke@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=546953

Review URL: https://codereview.chromium.org/1727103002

Cr-Commit-Position: refs/heads/master@{#377181}

1 files changed, 12 insertions, 0 deletions

diff --git a/components/scheduler/renderer/renderer_scheduler.h b/components/scheduler/renderer/renderer_scheduler.h
index 98635ba..9f9204f 100644
--- a/components/scheduler/renderer/renderer_scheduler.h
+++ b/components/scheduler/renderer/renderer_scheduler.h
@@ -151,6 +151,18 @@ class SCHEDULER_EXPORT RendererScheduler : public ChildScheduler {
   // received via OnRendererBackgrounded. Defaults to disabled.
   virtual void SetTimerQueueSuspensionWhenBackgroundedEnabled(bool enabled) = 0;
 
+  // Returns a double which is the number of seconds since epoch (Jan 1, 1970).
+  // This may represent either the real time, or a virtual time depending on
+  // whether or not the system is currently running a task associated with a
+  // virtual time domain or real time domain.
+  virtual double VirtualTimeSeconds() const = 0;
+
+  // Returns a microsecond resolution platform dependant time source.
+  // This may represent either the real time, or a virtual time depending on
+  // whether or not the system is currently running a task associated with a
+  // virtual time domain or real time domain.
+  virtual double MonotonicallyIncreasingVirtualTimeSeconds() const = 0;
+
  protected:
   RendererScheduler();
   DISALLOW_COPY_AND_ASSIGN(RendererScheduler);