chore: bump chromium to 7d4ac110045b7647fa8a81f5f0709 (master) (#24970)

* chore: bump chromium in DEPS to 760c905ccca34d8ed83c54f6a42c42a375792a6b

* chore: update patches

- Introduce WebContentsObserverList to encapsulate common behaviour
  2343269
- DumpAccTree mac testing: refactor tree formatter logic to make it
suitable for nested attribute calls
  2274545
- Fix FontPlatformDataMacTest.VariableOpticalSizingThreshold for Big Sur
  2351299

* chore: bump chromium in DEPS to b04584161e07d4ac110045b7647fa8a81f5f0709

* chore: update patches

* [printing] Move printing::MarginType to //printing/mojom/print.mojom

2341222

Co-authored-by: deepak1556 <hop2deep@gmail.com>

patches/v8/dcheck.patch

@@ -6,10 +6,10 @@ Subject: dcheck.patch
 https://github.com/auchenberg/volkswagen
 
 diff --git a/src/api/api.cc b/src/api/api.cc
-index 852a1d4bc353e75e7a453e8fa01c4d38483a6aee..70851923dd8fe59173e518c5b6b39d711c5c3ec3 100644
+index acb9b0ed3dfbb5286a9990ffaa7197045ea692fe..99c4437feb2fdf6136249a71d036c1eb40f6e1ae 100644
 --- a/src/api/api.cc
 +++ b/src/api/api.cc
-@@ -8712,7 +8712,7 @@ void Isolate::SetPromiseRejectCallback(PromiseRejectCallback callback) {
+@@ -8733,7 +8733,7 @@ void Isolate::SetPromiseRejectCallback(PromiseRejectCallback callback) {
  }
  
  void Isolate::PerformMicrotaskCheckpoint() {
@@ -19,10 +19,10 @@ index 852a1d4bc353e75e7a453e8fa01c4d38483a6aee..70851923dd8fe59173e518c5b6b39d71
    isolate->default_microtask_queue()->PerformCheckpoint(this);
  }
 diff --git a/src/heap/heap.cc b/src/heap/heap.cc
-index 6da43490ce9df8553064c94fbbe40da322dff87a..635c208f6ed6a87f5077173991a4e5fcc87bb834 100644
+index ec30f2aef4fbddcb720b9930ac19ae1dc6e01e80..49341b2997af3125e3ff17e7fa4de65a1bc9073f 100644
 --- a/src/heap/heap.cc
 +++ b/src/heap/heap.cc
-@@ -5647,9 +5647,9 @@ void Heap::TearDown() {
+@@ -5609,9 +5609,9 @@ void Heap::TearDown() {
  void Heap::AddGCPrologueCallback(v8::Isolate::GCCallbackWithData callback,
                                   GCType gc_type, void* data) {
    DCHECK_NOT_NULL(callback);