Update DEPS for 4984 branching

Change-Id: Ia6fe01aec0a980f55f885c1a643351e0ba6c865d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3569661
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/4984@{#1}
Cr-Branched-From: ea1a8af-refs/heads/main@{#988452}

DEPS

@@ -257,19 +257,19 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
-  'v8_revision': '445e90fe9b9efa996262e5b424c71e5345e41dae',
+  'v8_revision': 'refs/heads/chromium/4984',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
-  'angle_revision': '4b26022591b9c4a3610a53edef482b1842cddefc',
+  'angle_revision': 'refs/heads/chromium/4984',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.
   'swiftshader_revision': 'a190ceed72930fbfceff5b030490d06289af0972',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.
-  'pdfium_revision': '96f11830ebcb757ae919d286438a074e94c15508',
+  'pdfium_revision': 'refs/heads/chromium/4984',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.
@@ -364,7 +364,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
-  'dawn_revision': '2a87c84c56a209bfa67f7076c9fd9a65f4344ee0',
+  'dawn_revision': 'refs/heads/chromium/4984',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
@@ -1626,7 +1626,7 @@ deps = {
   },
 
   'src/third_party/requests/src': {
-      'url': Var('chromium_git') + '/external/github.com/kennethreitz/requests.git' + '@' + 'refs/tags/v2.23.0',
+      'url': Var('chromium_git') + '/external/github.com/kennethreitz/requests.git' + '@' + 'c7e0fc087ceeadb8b4c84a0953a422c474093d6d',
       'condition': 'checkout_android',
   },
 
@@ -1697,7 +1697,7 @@ deps = {
   'src/third_party/usrsctp/usrsctplib':
     Var('chromium_git') + '/external/github.com/sctplab/usrsctp' + '@' + '62d7d0c928c9a040dce96aa2f16c00e7e67d59cb',
 
-  'src/third_party/vulkan-deps': '{chromium_git}/vulkan-deps@73ae3e82193269de470fdd37a3390e643f8fe03a',
+  'src/third_party/vulkan-deps': '{chromium_git}/vulkan-deps@refs/heads/chromium/4984',
 
   'src/third_party/vulkan_memory_allocator':
     Var('chromium_git') + '/external/github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator.git' + '@' + 'ebe84bec02c041d28f902da0214bf442743fc907',
@@ -1736,7 +1736,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/gpuweb/cts.git' + '@' + '7afd2efc27572eda0e9b3a8c0831b47f5e6c3353',
 
   'src/third_party/webrtc':
-    Var('webrtc_git') + '/src.git' + '@' + '597e03f2010fb93608354f12f3f16a7c1944e915',
+    Var('webrtc_git') + '/src.git' + '@' + 'refs/branch-heads/4984',
 
   'src/third_party/libgifcodec':
      Var('skia_git') + '/libgifcodec' + '@'+  Var('libgifcodec_revision'),
@@ -1806,7 +1806,7 @@ deps = {
     Var('chromium_git') + '/v8/v8.git' + '@' +  Var('v8_revision'),
 
   'src-internal': {
-    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@c697647071b6e0e5d2636b05335b6a9b82d7de93',
+    'url': 'https://chrome-internal.googlesource.com/chrome/src-internal.git@refs/heads/chromium/4984',
     'condition': 'checkout_src_internal',
   },