BlinkMemoryMgt: Annotate Blink's platform/testing with the macros of Allocator

As a step to annotate the macros of Allocator for the Onion Soup, this CL annotates
some classes of //third_party/blink/renderer/platform/testing with the macros of
Allocator.

After some analyzes, it was concluded that for the case of HistogramTester,
LayerTreeHostEmbedder, ScopedMainThreadOverrider, ScopedSchedulerOverrider classes,
they make sense to use USING_FAST_MALLOC because they have been used as a member variable
with new() or smart pointers.

In FuzzedDataProvider classes, it makes sense to use DISALLOW_NEW because it's used
as member variable with a reference type.

Lastly, the rest of classes this CL annotates make sense to use STACK_ALLOCATED.

Bug: 919389
Change-Id: I1599e8879f39952d9699218a906ec8e7e193b5fa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1506675Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Gyuyoung Kim <gyuyoung@igalia.com>
Cr-Commit-Position: refs/heads/master@{#638463}

third_party/blink/renderer/platform/testing/blink_fuzzer_test_support.h

@@ -5,11 +5,15 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_TESTING_BLINK_FUZZER_TEST_SUPPORT_H_
 #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TESTING_BLINK_FUZZER_TEST_SUPPORT_H_
 
+#include "third_party/blink/renderer/platform/wtf/allocator.h"
+
 namespace blink {
 
 // Instantiating BlinkFuzzerTestSupport will spin up an environment similar to
 // blink_unittests. It should be statically initialized and leaked in fuzzers.
 class BlinkFuzzerTestSupport {
+  STACK_ALLOCATED();
+
  public:
   // Use this constructor in LLVMFuzzerTestOneInput.
   BlinkFuzzerTestSupport();

third_party/blink/renderer/platform/testing/fuzzed_data_provider.h

@@ -7,6 +7,7 @@
 
 #include "base/macros.h"
 #include "base/test/fuzzed_data_provider.h"
+#include "third_party/blink/renderer/platform/wtf/allocator.h"
 #include "third_party/blink/renderer/platform/wtf/text/cstring.h"
 #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
 
@@ -15,6 +16,8 @@ namespace blink {
 // This class simply wraps //base/test/fuzzed_data_provider and vends Blink
 // friendly types.
 class FuzzedDataProvider {
+  DISALLOW_NEW();
+
  public:
   FuzzedDataProvider(const uint8_t* bytes, size_t num_bytes);
 

third_party/blink/renderer/platform/testing/histogram_tester.h

@@ -7,6 +7,7 @@
 
 #include <memory>
 #include "third_party/blink/renderer/platform/histogram.h"
+#include "third_party/blink/renderer/platform/wtf/allocator.h"
 
 namespace base {
 class HistogramTester;
@@ -16,6 +17,8 @@ namespace blink {
 
 // Blink interface for base::HistogramTester.
 class HistogramTester {
+  USING_FAST_MALLOC(HistogramTester);
+
  public:
   HistogramTester();
   ~HistogramTester();

third_party/blink/renderer/platform/testing/layer_tree_host_embedder.h

@@ -11,6 +11,7 @@
 #include "cc/test/test_task_graph_runner.h"
 #include "cc/trees/layer_tree_host.h"
 #include "cc/trees/layer_tree_settings.h"
+#include "third_party/blink/renderer/platform/wtf/allocator.h"
 
 namespace blink {
 
@@ -18,6 +19,8 @@ namespace blink {
 // for unit tests that need to instantiate only a cc::LayerTreeHost and not the
 // full blink APIs that normally own and embed it.
 class LayerTreeHostEmbedder {
+  USING_FAST_MALLOC(LayerTreeHostEmbedder);
+
  public:
   // Default constructor uses stub clients, and default LayerTreeSettings
   // appropriate for blink unit tests.

third_party/blink/renderer/platform/testing/scoped_main_thread_overrider.h

@@ -7,6 +7,7 @@
 
 #include <memory>
 #include "third_party/blink/renderer/platform/scheduler/public/thread.h"
+#include "third_party/blink/renderer/platform/wtf/allocator.h"
 
 namespace blink {
 
@@ -19,6 +20,8 @@ namespace blink {
 // the constructor gets destructed.
 
 class ScopedMainThreadOverrider final {
+  USING_FAST_MALLOC(ScopedMainThreadOverrider);
+
  public:
   explicit ScopedMainThreadOverrider(std::unique_ptr<Thread> main_thread);
   ~ScopedMainThreadOverrider();

third_party/blink/renderer/platform/testing/scoped_mocked_url.h

@@ -8,6 +8,7 @@
 #include "third_party/blink/public/platform/web_string.h"
 #include "third_party/blink/public/platform/web_url.h"
 #include "third_party/blink/public/platform/web_url_response.h"
+#include "third_party/blink/renderer/platform/wtf/allocator.h"
 
 namespace blink {
 
@@ -17,6 +18,8 @@ namespace test {
 // unregister it on destruction. This prevent mocked URL from leaking to other
 // tests.
 class ScopedMockedURL {
+  STACK_ALLOCATED();
+
  public:
   explicit ScopedMockedURL(const WebURL&);
   virtual ~ScopedMockedURL();

third_party/blink/renderer/platform/testing/scoped_scheduler_overrider.h

@@ -7,6 +7,7 @@
 
 #include "third_party/blink/renderer/platform/scheduler/public/thread_scheduler.h"
 #include "third_party/blink/renderer/platform/testing/scoped_main_thread_overrider.h"
+#include "third_party/blink/renderer/platform/wtf/allocator.h"
 
 namespace blink {
 
@@ -16,6 +17,8 @@ namespace blink {
 // Overrider. Multi-thread is not supported.
 
 class ScopedSchedulerOverrider final {
+  USING_FAST_MALLOC(ScopedSchedulerOverrider);
+
  public:
   // |scheduler| must be owned by the caller.
   explicit ScopedSchedulerOverrider(ThreadScheduler* scheduler);

third_party/blink/renderer/platform/testing/wtf/scoped_mock_clock.h

@@ -5,6 +5,7 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_TESTING_WTF_SCOPED_MOCK_CLOCK_H_
 #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TESTING_WTF_SCOPED_MOCK_CLOCK_H_
 
+#include "third_party/blink/renderer/platform/wtf/allocator.h"
 #include "third_party/blink/renderer/platform/wtf/time.h"
 
 namespace WTF {
@@ -13,6 +14,8 @@ namespace WTF {
 // stack resets mock time to the zero point for WTF::Time and WTF::TimeTicks.
 // Mock time may only flow forwards, not backwards.
 class ScopedMockClock {
+  USING_FAST_MALLOC(ScopedMockClock);
+
  public:
   ScopedMockClock();
   ~ScopedMockClock();