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/chromium/blink_local_frame.patch

@@ -14,10 +14,10 @@ when there is code doing that.
 This patch reverts the change to fix the crash in Electron.
 
 diff --git a/third_party/blink/renderer/core/frame/local_frame.cc b/third_party/blink/renderer/core/frame/local_frame.cc
-index ebcd69c23d1b2b457591f20af481fc82131ead00..5a4d0f2adf4f950e456190d4903931440f3e61e4 100644
+index 97cd8eb72e9932797089787dc13dcd0f540f2b78..edf0e4e8786997556509c8bb997bbc9859a5147e 100644
 --- a/third_party/blink/renderer/core/frame/local_frame.cc
 +++ b/third_party/blink/renderer/core/frame/local_frame.cc
-@@ -558,10 +558,6 @@ void LocalFrame::DetachImpl(FrameDetachType type) {
+@@ -563,10 +563,6 @@ void LocalFrame::DetachImpl(FrameDetachType type) {
    }
    CHECK(!view_ || !view_->IsAttached());
  
@@ -28,7 +28,7 @@ index ebcd69c23d1b2b457591f20af481fc82131ead00..5a4d0f2adf4f950e456190d490393144
    if (!Client())
      return;
  
-@@ -579,6 +575,10 @@ void LocalFrame::DetachImpl(FrameDetachType type) {
+@@ -584,6 +580,10 @@ void LocalFrame::DetachImpl(FrameDetachType type) {
    // Notify ScriptController that the frame is closing, since its cleanup ends
    // up calling back to LocalFrameClient via WindowProxy.
    GetScriptController().ClearForClose();